One of the systems revisited at the plant was the sludge-handling system, which had gone through a number of changes and evaluations. An air dryer was added in 1991 to the air supply of the double-diaphragm sludge-press feed pump. Despite the fact that it was located inside the building, the pump would oc...
The new Bonide Chemical facility near Oriskany, N.Y., serves as proof that radiant heating can meet the most challenging heating requirements. This 150,000-square-foot building-with 2,900 cubic yards of concrete flooring and 40-foot-tall ceilings-will eventually house manufacturing, warehousing and office areas.
An extreme example of sustainable design, the new offices of the Chesapeake Bay Foundation just outside of Annapolis, Md., offer a long list of energy-efficient features—at an inflated initial cost.
Once Jack Dale Associates (JDA) quantified mechanical-system interactions for Texaco's data center, specified techniques were employed to upgrade the plant while avoiding disruptions to data-processing operations. Total construction costs for chiller-plant renovations commissioned by JDA were less than $600,000.
Condensate Pump & Steam Trap handbook provides the latest information about the manufacturer's newest nonelectric pump model, with comprehensive capacity tables that eliminate sizing guesswork and application drawings that illustrate most installations. Also included is information needed to select, size and specify the manufacturer's line of general-use stream traps. (Spence Engineering Co.
Valve series in sizes ranging from 0.5 inches to 1 inch and valve actuators are designed for zone-level and terminal applications with VAV reheat, fan coils, heat pumps, unit ventilators and radiators. Electronic valves feature a 100-to-1 range for higher control. Globe valves are rated at ANSI Class 4 for leak protection. (Siemens Building Tech.) Circle 36
Refrigerant level sensors detect the presence of refrigerants at a specific point in refrigerant vessels, intercoolers and packaged chillers. Previously available only for ammonia, the single-point sensors and switches have now been developed for R-22, R-134a, R-404A and R-507.
Boiler controllers feature two mercury-free snap-action switches: one to operate a boiler feed pump and a second to interrupt the burner circuit in a low-water condition. Devices are designed for installations with operating pressure below 50 psi or for applications requiring wider differentials at lower pressures. Also available are models with quick hook-up fittings or gauge glass tappings.