Air conditioning system commissioning and startup is the process of inspecting a new air conditioning installation, and verifying that the new system is running properly and efficiently. This article describes the commissioning procedure.
While workers’ compensation managed care is widely viewed as a means of controlling expenses, the results are sometimes quite different from what is expected. In fact, in many cases the consequences are not only unintended but also undesirable and costly to employers.
United States factory shipments of residential cooling and heating equipment declined in February, compared with the same month a year ago, according to the Air-Conditioning, Heating, and Refrigeration Institute (AHRI).
Boiler “short cycling” occurs when an oversized boiler quickly satisfies process or space heating demands, and then shuts down until heat is again required. This article points out the inefficiency of short cycling and provides suggested actions to maximize boiler efficiency.
Bob and Btu Buddy get together for lunch and talk about why high head pressure seems to drive up the power consumption of a compressor. Bob remarks that the problem “doesn’t seem to happen in the cooling season, only in the heating season. What is the difference and why is this happening?”
Under a new law, employers who are already covered by the Family and Medical Leave Act (50 or more employees) may need to expand their list of employees who qualify for unpaid time off, and the amount of unpaid time that employees can take off has more than doubled in some cases.
Remember that automatic control systems are automatic in operation, but not self-repairing. Unless a building has a service contract with a reputable controls contractor to inspect and calibrate the HVAC control system every six months, it is very likely that the HVAC system is not providing maximum comfort.
Dealing with a user’s complaint of a noisy motor can be a frustrating experience. After all, the perception of noise is extremely subjective (just ask the parents of teenagers). Not only does the range of human hearing differ considerably among people, but it also varies by specific frequency.
Nonresidential construction will experience wide variance in demand, materials cost, and labor availability, according to a Construction Inflation Alert released by the Associated General Contractors of America (AGC).