When Southern California was blasted by record-breaking heat, the tenants of an LAX Airport Center office building were fortunate that the cooling tower that works in conjunction with the building’s chillers had just been replaced. So, rather than having to endure the sweltering heat, the tenants remained cool and comfortable.
Chlorinated polyvinyl chloride (CPVC) first made its way into the world of venting systems in the residential market. Recently, CPVC has been used to vent Category IV high-efficiency boilers. While it can cost up to 20 percent less than stainless steel, those specifying venting systems should consider other differences that may impact boiler efficiency and present potential safety hazards.
It’s another year and it will soon be time again for more of the
hustle and bustle of contractor shows. It’s time to shake hands, meet new
business prospects and - most importantly - sell, sell, sell. If you’re a contractor who plans on going to a local
or regional home and garden show in order to round up some new business, be
sure to take maximum advantage of your time at the show.
Here are some tips for HVAC and plumbing systems maintenance in commercial buildings that will help mechanical contractors and their customers save time and money.
The newest product innovation in the ventilation industry - the modular/field-adjustable (M/FA) fabric duct/diffuser system - promises air distribution installation time reductions of as much as 40 to 80 percent and 15 to 50 percent less material costs, depending on marketplace geography.
Bob has gone on a service call where the customer is complaining that her house is not getting up to temperature. The house was heated with a heat pump with three stages of auxiliary strip heat. Bob removed the panel to the strip heat and found one of the units was not pulling current.
For many employers, properly calculating overtime can feel like an unending process. Factoring in break times can be complicated. Employees who may seem exempt from overtime may actually be entitled to it under the Fair Labor Standards Act (FLSA). Unfortunately, miscalculating overtime can be costly for companies in terms of fines and lawsuits.
Housing starts declined 4.3 percent to a seasonally adjusted annual rate of 529,000 units in the final month of 2010, according to figures released by the U.S. Department of Commerce. However, the year-end data indicate that production of new homes improved 6.1 percent in 2010 over 2009. On another positive note, permit issuance for construction of new homes and apartments rose 16.7 percent in December.
There have been two approaches to capturing the sun’s energy: photovoltaics, to turn sunlight into electricity, or solar thermal systems, to concentrate the sun’s heat to boil water to turn a turbine, or use it directly for hot water or heating. But there’s another approach that was sidelined because nobody found a way to harness it in a practical, economical way.
Thermography uses an infrared camera (thermal imager) to capture two-dimensional representations of the surface temperatures of parts of buildings. Often, those images reveal temperatures or temperature differences that indicate conditions contributing to the waste of heated or cooled air and, as a result, needlessly excessive energy costs.
RSS
