Keep Your Hotel Doors Open by HVAC Maintenance

Anyone in the hospitality industry understands that they are in the business of creating and maintaining customer satisfaction. Few hospitality businesses have to deal with customer comfort complaints more than the hotel business. Often, guests make a decision on leaving a bad review or returning to a hotel again purely based on the interior climate of the room and the level of comfort that this affords them. Guest comfort is most easily thrown off by the interior climate of the room, and according to Travel Plus, 24% of all guest complaints that a hotel receives will be about the temperature in the room.

The heating, ventilation and air conditioning (HVAC) system maintains the climate inside the hotel and its effectiveness has a direct connection to guest comfort. The HVAC system is typically the most expensive operating cost that a hotel has, and so penny-pinching hotel managers may be inclined to be frugal with its use or to neglect the proper servicing that it needs to operate. If efforts to save energy and maintain the HVAC system are managed incorrectly, hotel owners can do more damage and incur more costs than they would otherwise by leaving the HVAC system alone.

There are numerous prudent and proactive measures a hotel can put in practice in reducing HVAC energy usage that can lead to significant savings for a building. One of the first steps that a hotel should take is to get an ASHRAE level 2 audit or a retro-commission study done on their building. These studies will provide immediate feedback information and suggest such as: whether the HVAC system currently in operation is the right size, detailed HVAC requirements for the building, and additional impact areas where the hotel improve upon.

Hotel rooms typically each have their own individual room controls for interior temperature, and so there is great variability in room settings and HVAC requirements room by room. The more that an HVAC system is operating to meet individual room requirements, the more energy it is using. Scheduling the HVAC so that it runs only when necessary is one of the best methods to reduce energy use. The HVAC system should be on for a room only immediately before it is occupied and while it is occupied. HVAC running in empty rooms is extremely wasteful and adds significant unnecessary costs to the operating expenses of the hotel. This idea also applies to common spaces such as meeting rooms and banquet halls. These large spaces have a proportionally massive HVAC load compared to the individual hotel rooms and should be placed on an automation system with demand control, temperature, control, and lighting controls.

Building managers can reduce HVAC energy use by as much as ten percent when they implement a disciplined and rigorous HVAC maintenance schedule for their building. Some of the most critical maintenance practices to incorporate into the maintenance plan are dependent on the systems they use, but should include:

  • Visually and systematically inspect all wiring and sensors
  • Clean the system coils (both evaporator and condenser)
  • Replacing filters
  • Test and calibrate system controls
  • Lubricate and adjust equipment on a scheduled basis
  • Inspect and repair any ductwork leaks as needed
  • Replace worn and weather-stripped seals

A maintenance plan that addresses these practices at a minimum will lend numerous benefits over time to building managers. Effective scheduled maintenance is the very best way to avoid unexpected system failures that require costly service calls and room unavailability that eats into profits. Scheduled maintenance also ensures that HVAC equipment lasts longer, which decreases the lifecycle costs experienced and increases the time between extremely costly HVAC system upgrades. As a hotel continues to operate with an effective HVAC maintenance plan, energy bills will reduce month to month, and the hotel can move the savings into improving other aspects of the business.

Goodway Technologies offers numerous products that can make any HVAC preventative maintenance easy. However, in the hotel/motel market, there are two commonly used HVAC systems that Goodway offers advanced products for cleaning a maintaining. The first common HVAC system in hotels is the Packaged Terminal Air Condition (PTAC). The other common system is the Vertical Terminal Air Conditioner (VTAC). Goodway offers multiple products designed to clean these systems in place.

 

Next Steps:

Check out the Goodway site to see the full product line.

Download the Coil Cleaning Pro Guide.

Learn more about Goodway’s CoilPro CC-400HF Coil Cleaner.

Get tips and tricks on Cleaning HVAC Coils Checklist.

Mechanical vs. Chemical Scale Removal: What Is Best For My Facility’s HVAC Equipment?

Scale or limescale is caused by mineral deposits in water becoming adhered to pipes, pumps and other hydronic system components. This adhesion is a natural occurrence when water is heated or cooled. Even the best-treated water contains scale deposits, however raw water deposits, including those from well and other underground sources, lakes, and ponds can contain significant levels of minerals, also known as “hard water”. In fact, over 80% of the continental USA has moderate to hard water.  Scale build-up that is caused by hard water can have numerous adverse effects on the systems and components that come in contact with the water. It is important for owners, operators, and facility managers to not only pay attention to excessive scale build-up but to also have a response and maintenance plan for removing the scale.

The first general approach to maintaining scale build-up is the use of mechanical tools and practices to remove scale build-up. There are multiple techniques and practices that fall under mechanical scale removal. Primarily, mechanical scale removal involves removal utilizing machines or machinery to physically remove the scale build-up from system components. For chillers, boilers and other heat exchange equipment, Goodway offers numerous excellent products that mechanically remove scale buildup from machine and system components. The RAM-4 Chiller Tube Cleaner is one of many varying capacity tube cleaners that, when paired with an appropriate brush, effectively cleans tough scale deposits in chillers, condensers, evaporators, absorption machines, and other heat exchangers.

When mechanical tools are not enough to rid scale, a chemical scale remover can be a great tool to safely, efficiently and effectively remove scale. Chemical scale removal is a generally more passive approach to system and component maintenance, where a chemical solution is flushed through the interior piping and components of a system and reacts with mineral scale build-up to remove and cleanse the system.

Chemical scale removal can be conducted in a number of ways but is most effective when the chemical is pumped through the interior piping and connections of a system. One such system that is effective on larger industrial HVAC and process machinery is the GDS-100-BV is Scale Removal System. When paired with ScaleBreak®, Goodway’s advanced descaling solution, the system quickly and effectively removes the scale leaving system operating at optimal efficiency. In fact, in many instances systems will operate at an efficiency higher than when first installed. Read how in this case study.

Plant maintenance managers need to understand both mechanical and chemical descaling options and how they apply to the equipment in their plant. Deciding between either method can be difficult, but there are a few key factors that managers can focus on to make their choice. These deciding factors for managers include upfront cost and lifecycle cost, effective fit for their intended use, the amount of money saved in operating and the extension of the usable lifetime of the serviced equipment, and any regulatory guidelines pertaining to the equipment needed to be maintained.

Goodway offers two excellent features on its website to assist managers with deciding which method of descaling equipment to purchase and utilize. Managers who are considering implementing a new maintenance plan or changing their current one should consult with the experts at Goodway and utilize the tools they have for making these difficult decisions.

The first feature on their site is their cost calculator. This cost calculator can break down the cost data for numerous types of equipment to include boiler, chiller, and cooling tower descaling equipment. Utilizing this calculator provides an excellent insight into the potential savings and best-fit equipment for different types of industrial equipment. The second decision-making tool that Goodway offers is their buyer guide, which provides key information and articles about descaling technologies, with further information on key factors to consider when choosing maintenance equipment.

 

Next Steps:

Watch our webinar on Scale: Why You Have It, What It Does and How to Descale Safely and Effectively.

Watch our webinar on Industrial Descaling: Challenges and Benefits.

See Instructions for Cleaning Brazed Plate & Gasketed Heat Exchangers with ScaleBreak.

See Goodway ScaleBreak® featured in Canadian Facility Management & Design.

Read up on Goodway Descaling Solutions For MULTISTACK® Chillers

Listen to this Podcast: Descaling Large Equipment brought to you from HVAC SCHOOL.

Innovations In Sanitation: Meat And Poultry

Good sanitation practices are a crucial component of Good Manufacturing Practices (GMP). A commitment to sanitation at all levels of the meat and poultry industry is critical to prevent the spread of foodborne illnesses from infecting food processes and causing significant economic losses. Every year the food safety programs at numerous plants and facilities fail at sanitation and spread infected food across the country, requiring expensive recalls. The Center for Disease Control states that there are over forty-eight million cases of foodborne illnesses that occur in the United States every year. At some level in each of these cases, food sanitation equipment and practices failed and put the health of citizens in jeopardy.

Innovation in the area of cleaning and sanitation in the meat and poultry market has been slow. The use of hot water, wet steam, and foaming cleaners and sanitizers have been the status quo for years. And while these products work well to clean wet environments, technological improvements in the packaging, slicing, and other machines have created new areas where “dry” cleaning techniques would be better suited, as well as more portable cleaning solutions.

Steam has been used widely in the meat and poultry market for years. This steam, however, has predominantly been “wet” steam and can include a considerable amount of water by volume. Applications have generally included cleaning and sanitation, and more impactful cleaning like “tenting” of slicers and large equipment. However, due to the “wetness” of the steam, it is not ideal for use where sensitive equipment is susceptible to water damage.

One of Goodway’s most popular dry steam products is the GVC-18000 Heavy-Duty Dry Steam Cleaner. It is one of the most powerful dry steam cleaners in its class utilizing dry steam (about 5% moisture level) to remove difficult grime and grease build up as well as sanitize equipment, eliminating harmful bacteria and microorganisms. Contamination in the meat and poultry industry poses a constant risk to food manufacturers.

One of Goodway’s upcoming products for food equipment sanitation is the Sanitation Chamber. The chamber provides a simple and effective method to sanitize the equipment and tools utilized during food processing in a modular and easy to use design. This chamber pairs excellently with the other sanitation tools and methods that Goodway offers, such as its GVC-18000 model of steam cleaning equipment. Small parts and tools that are placed inside the chamber are sanitized using the high-temperature steam, quickly reaching and maintaining temperatures to remove pathogens.  This process offers one of the first and most effective methods to efficiently sanitize small parts and equipment that would otherwise take intensive amounts of effort and time.

Sanitation practices are essential to successful plant operation. They support safe food production practices that protect consumers and ensure plant production and profits. Goodway provides numerous products that increase the effectiveness and ease of cleaning and sanitation practices.

Next Steps

Check out more information on these products at https://www.goodway.com/industries/food-beverage-processing or contact us today.

New Years Resolution: Preventative Maintenance of HVAC System Servicing Data Centers

Data centers represent a unique challenge to building managers. The stacks of servers require large amounts of energy to constantly run, while also emanating large amounts of heat into the room. The challenge is keeping energy costs low in a building while running a high energy-consuming, heat-producing data center at peak performance. As a building manager of a large data center, it is inevitable that the energy costs for cooling the building are likely the largest out of pocket cost each month. Despite the high cost of cooling, many building managers don’t focus enough on conducting proper planned maintenance of their HVAC systems. In order to save a significant amount in monthly energy expenses and long-term equipment bills, building managers should make a business-focused new year’s resolution to create or revive their planned maintenance schedule for HVAC.

According to the American Society of Heating, Refrigerating, and Air Conditioning (ASHRAE) the standard data center requires room conditions to be between 18 and 27 degrees Celsius (64 to 81 degrees Fahrenheit), with a dew point between -9 and 15 degrees Celsius, and relative humidity of 60 percent. The climate, heat output, building construction and makeup of the data center are just some of the numerous variables that make maintaining a room within those conditions both difficult and costly. The heat output of a data center is proportional to the combined amount of computing output and data storage capabilities of the center and likewise, the interior climate conditions inside a data center affect the efficiency of data transfer and server operation. When the HVAC system servicing a data center struggles to maintain internal climate conditions it is at the detriment of both the performance of the servers inside the center as well as the energy consumption of the building.

Maintaining an efficient and healthy HVAC system performance is one of the best approaches to counteracting potentially expensive data center costs. This level of system maintenance can be difficult depending on the demand put on the HVAC system. The interior climate demands in a data center are stringent and they require year-round HVAC performance, but they are also consistent. Unlike human-occupied spaces in a building that can have varying cooling demands, the heat output of a data center is relatively constant. The consistency of the heating load inside a data center provides a unique opportunity for building managers and plant owners to optimize their system to fit the needs of the data center while requiring the least amount of energy to run.

Planned maintenance of the HVAC system serving a data center is a crucial aspect of building management. Periodically scheduled cleanings of system components pay significant dividends in energy savings for an HVAC system. Chillers, coils and other components become clogged with material over time, reducing efficiency and drastically increasing costs.

A hydronic HVAC system or large chilled water system with a significant buildup of limescale and other water formed deposits will have to work significantly harder to maintain the room conditions of a data center. Scale deposits attach to the chiller tube walls, cooler tower piping, and other water-filled components of Hydronic and chilled water systems and reduce the heat exchange properties of the system, as well as the cross-sectional area available for fluids to flow through. This ultimately requires more energy for heat transfer and more power to propel the fluid through the system. Even a small-scale buildup inside pipes can require significantly more energy to cool a space. Additionally, for large HVAC spaces with constant use, a buildup of limescale can degrade the same components of and hydronic and chilled water HVAC systems, drastically reducing their effectiveness and decreasing their usable life.  Large data centers require the greatest cooling effort, and degradations will cause losses in the tens of thousands of dollars. Building managers can calculate their true cost of HVAC scale by using one of the descaling calculators at goodway.com/resources/calculators.

For systems where scale is not the issue, like Packaged HVAC system or RTU’s, scheduling the cleaning of coils is essential to maintain optimal temperatures. Wasted energy can cost between $1,000 and $3,700 per unit. Dirty coils can diminish heat transfer and increase operating temperatures and pressures. The importance to wash and flush both sides of the coils can be the difference between a data center overheating and shutting down or maintaining proper temperature and continuous power. Solutions, like the ones from Goodway, are specifically designed to clean coils. Just as cleaning the coils of such units the maintenance of cleaning the condensate drainage is consequential. Clogged condensate drain lines prevent water and other liquids from effectively moving out of the unit which can in time cause damage to the unit and surrounding area.

A comprehensive preventative maintenance plan is the single greatest method to minimize efficiency losses throughout the year. If building managers don’t already have a plan in place to maintain the efficiency and effectiveness of the HVAC system cooling their data center, they should implement one immediately. Maintenance plans can easily be synchronized with the calendar so that starting with the new year each maintenance plan becomes a new year’s resolution for HVAC efficiency. Setting a new year’s resolution is an effective way of making a permanent change for the future, and for a data center, a permanent change to regularly scheduled maintenance can produce savings throughout the life of the system. For specific problems such as system descaling, there are simple solutions such as Goodway’s ScaleBreak Liquid Descaler. Goodway’s line of ScaleBreak products safely dissolve mineral deposits inside your system components quickly and safely. The ScaleBreak Liquid Descaler is a low cost and effective method for achieving your new year’s resolution to carry out system maintenance.

Next Steps

Check out more information on these products at goodway.com/accessories/descaling-chemicals-accessories.

GDS-100 Gets Top Grades When Put To The Test

For building systems like boilers, cooling towers, and heat exchangers that use water to transfer heat, the buildup of mineral deposits and scale inside the equipment is a normal part of the operation. Over time the scale layer gets so thick that heat cannot transfer efficiently through the equipment causing substantial system losses and potential equipment breakdowns. The only way to get the efficiency back is to either mechanically or chemically remove the scale from the equipment, and at this level of scale buildup, a chemical was the only viable option.

For one Operation’s Shift Supervisor at a municipal water power generation plant, routine descaling of several large plate heat exchangers was cumbersome and a burden. As he says,

“We usually just opened the heat exchanger up and cleaned it with power washers. That worked, but it was very labor-intensive. We were interested in an easier way to remove scale buildup” Having already been introduced to Goodway’s time-saving tube cleaning equipment, he called his local sales rep for a way to improve the labor-heavy descaling work.

“Our Goodway sales rep sent us a brochure on the GDS-100 descaling system and I did some research. The product seemed like it might apply to our work and could save labor costs by not having to open up the heat exchanger. The setup looked easy and we had never tried a recirculating system, so we decided to test it out.”

The GDS-100 is a portable “clean-in-place” (CIP) descaling system that pumps descaling liquid through industrial hydronic equipment to dissolve mineral scale deposits, into a liquid suspension to be flushed out. The descaling system is built on wheels making it easy to roll to the work area and once it’s running, the descaler can be left to do the work while the technicians take care of other things.

The power plant maintenance team put the GDS-100 to the test. They filled it with ScaleBreak® Liquid Descaler to see how the system would handle a heavily scaled plate heat exchanger. “We decided to let the GDS-100 circulate for a full 24 hours to see if it could clean it. When it was done we opened up the heat exchanger and found that it did an effective job at cleaning out the scale.” The team immediately knew this was a product that would help them be more efficient.

“Labor savings are a huge benefit of this machine. I can set this up in two hours and just let it run unmanned by itself. We don’t have to open the heat exchanger for inspection each time we clean because we’ve already tested and know it works. The gaskets stay intact and remain inside the exchanger and we don’t have to struggle to put them back. Manual cleaning is very labor-intensive when you don’t have the benefit of the circulation system. We can see the labor savings right away.”

The savings from the GDS-100 goes beyond labor. The efficiency of the heat exchanger improved immediately after it was descaled. When scaled, the heat exchangers at the power plant were only showing a temperature drop of 4 or 5 degrees. But after being descaled with the GDS-100, the heat exchangers were giving 8 to 9-degree temperature differences – nearly a 100% improvement. The team told us that they were getting efficiencies they hadn’t gotten in a long time.

Fast setup, reduced labor costs, and improved efficiency make the GDS-100 and ScaleBreak® Liquid Descaler the choice for maintenance managers everywhere. The team at the municipal power plant is spreading the news of their success. “We’ve taken photos and sent them around to our other facilities to show them the results.” We love to make our customers more successful. Let us show you our entire line of products to make you and your equipment more efficient and work better.

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