Humidity and its control have been receiving greater and greater attention, especially their relationship to good or poor indoor air quality (IAQ). So it’s no wonder that an American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) seminar explored “Practical Aspects of Humidity Measurement.”
The U.S. Census Bureau has started to release portions of the data collected from its 2000 Census. Its “Profile of Selected Housing Characteristics: 2000” is now available, and a comparison with the previous 1990 Census data shows where the market has evolved and where it hasn’t.
As the nation continues to grapple with increasing mold problems indoors, it is clear that ventilation and moisture play key roles in feeding mold and then spreading it. The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has been questioning whether its own standards, specifically 90.1 on energy-efficient buildings and 62 on indoor air quality (IAQ), have contributed in a significant way.
It’s the middle of summer, the temperature is soaring, and it’s time to think about keeping cool — especially where customers are concerned. So what do you do when you have to take a building’s A/C system offline in order to make repairs? Or worse yet, what do you do when a system breaks down, and you’re going to have to wait a few days for a part? One answer is portable, or temporary, cooling.
When a major department store in a New York mall had a problem with its 600-ton absorption chiller, management needed a quick solution to keep the store cool. NuTemp came through with a portable chilled-water plant and generator.
As part of Carrier’s 100th anniversary celebration, the company has recognized two energy-efficient HVAC investments. Two Chicago buildings were presented with a Carrier Environmental Award at the Building Owners & Managers Association (BOMA) International 95th Annual Convention & The Office Building Show.
Today’s centrifugal chillers offer some of the highest efficiencies ever. The technology may be more advanced, and the refrigerants are newer, but some things remain the same: the systems’ need for regular maintenance.
The day will undoubtedly come when it’s necessary for you to arrange for portable cooling in order to keep a customer comfortable. Whatever the occasion, contractors should be aware of where they can get their hands on portable cooling equipment. One source is Spot Coolers, which has 27 locations nationwide.
As refrigerant courses through your typical residential air conditioning system (one consisting of a direct expansion evaporator coil and air-to-air condenser), its state changes from vapor to liquid and then back to vapor. For the system to produce years of proper cooling, it is imperative that the refrigerant be in the right state at the right time in the right location. As we cannot see inside of the system piping and components, how can we tell just what state the refrigerant is in? By taking superheat and subcooling measurements.
In many ways, SkillsUSA-VICA is a number-crunching experience. Consider: Some 12,500 students, teachers, and business partners descend on Kansas City, MO, each summer for five days. Most of the time is set aside for speeches and seminars. One day is set aside for the SkillsUSA Championship. More than 4,000 vocational and technical students compete hands-on in 73 different trade, technical, and leadership fields.