In this final installment of a three-part series on mold and its relationship to HVACR systems, The News explores the possibilities posed by increased consumer awareness about mold and ways that HVACR contractors can add indoor air quality testing and mold remediation to their existing services.
The National Academy of Sciences, National Academy of Engineering, and Institute of Medicine inaugurated a study shortly after Sept. 11 to provide recommendations for combating terrorist threats. The report, Making the Nation Safer: The Role of Science and Technology in Countering Terrorism, is now available.
Advances in chiller design significantly improve efficiency. However, keeping chillers operating efficiently is still very much in the hands of contractors and service representatives. “High-tech” chillers are built with narrower tolerances; service and upkeep are more crucial than ever to keep efficient chillers operating at peak conditions.
The new Delta Pinnacle Hotel in Vancouver is a gem. But The News bypassed the lobby, spacious suites, and sweeping views. They’re nice, but we prefer to visit with director of engineering Victor Pankrantz, whose main interest is the care and operation of Trane chillers installed in the basement, Baltimore Aircoil cooling towers on a mezzanine-level rooftop, and Trane fancoils behind walls and ceilings.
Oil in refrigerant — many chillers have too much, and it’s lowering system efficiency in a big way, coating evaporator coils and affecting heat transfer surfaces. A new product is said to address the problem of too much oil in the refrigerant, while keeping the oil at a level that actually helps system efficiency, according to Mark Key, vice president of component manufacturer Redi Controls.
The Sheet Metal Workers’ International Association (SMWIA) has formally announced its support for the “United States Toxic Mold Safety & Protection Act,” a bill scheduled to be introduced in the U.S. House of Representatives by Representative John Conyers, Jr. (D-MI).
A positive temperature coefficient resistor (PTCR) is a resistor that varies its resistance with its temperature. A resistor that changes its resistance characteristics as a function of its temperature is also called a thermistor. So the PTCR is technically a thermistor.
Sales Engineering, Contracting & Associates (SECA), a design-build mechanical contractor and purchasing agent, has worked with several Melia hotels over the years on various projects. Since the early 1990s, the firm has assisted 10 of the chain’s resorts, improving existing potable water systems and providing significant hot water cost reduction.