http://www.pro-engr.com We provide easy to understand information on Energy and HVAC systems. The emphasis is on a practical approach to leading an energy-efficient life, professionally and at home. Tue, 26 Oct 2010 14:13:13 GMT ListGarden Program 1.3.1 http://blogs.law.harvard.edu/tech/rss http://www.pro-engr.com/Category%20Pages/About%20Me/About_Me.htm This is a brief description of me and what I do. I am a Professional Mechanical Engineer in Virginia Beach, Virginia specializing in energy and HVAC. Tue, 26 Oct 2010 14:09:07 GMT http://www.pro-engr.com/Articles/Plumbing/Tankless%20Water%20Heaters-What%20to%20Know%20Before%20Purchasing.htm Pro Energy and HVAC- Before you purchase a tankless water heater consider a few of these hints to minimize costs. Tue, 26 Oct 2010 14:08:11 GMT http://www.pro-engr.com/Articles/Plumbing/Tankless%20Water%20Heaters-Optimize%20the%20Location.htm Pro Energy and HVAC- The best location of a tankless water heater is discussed in this article. Hints on how to save money as you consider where to locate the tankless water heater. Tue, 26 Oct 2010 14:07:26 GMT http://www.pro-engr.com/Articles/Plumbing/Gas%20Tankless%20Water%20Heater-Best%20Locations%20for%20Installation.htm Pro Energy and HVAC- The best location of a gas tankless water heater is discussed in this article. Hints on how to save money as you consider where to locate the tankless water heater. Tue, 26 Oct 2010 14:06:41 GMT http://www.pro-engr.com/Articles/Plumbing/7%20Reasons.htm Pro Energy and HVAC- Tankless water heaters will be in every home and many businesses soon. These are good reasons for considering a tankless water heater. Tue, 26 Oct 2010 14:06:04 GMT http://www.pro-engr.com/Category%20Pages/Plumbing%20Page/Plumbing.htm Pro Energy and HVAC- A page listing Plumbing articles on Pro Energy and HVAC site. If Plumbing interests you, click and visit the site! Tue, 26 Oct 2010 14:05:23 GMT http://www.pro-engr.com/Articles/HVAC/Energy%20Efficient%20Residential%20HVAC.htm Pro Energy and HVAC-Residential HVAC systems have evolved beyond just blowing air. This article looks at energy efficient residential HVAC systems with a Michael Holigan video. Tue, 26 Oct 2010 14:04:30 GMT http://www.pro-engr.com/Articles/HVAC/How_Do_I_Clean_My_Condensing_Unit.htm Pro Energy and HVAC- A DIY article on cleaning your air cooled condensing unit or heat pump. Written for the non-mechanically inclined person with no HVAC knowledge. Tue, 26 Oct 2010 14:03:40 GMT http://www.pro-engr.com/Articles/HVAC/Energy_and_HVAC_Optimization.htm Pro Energy and HVAC- Let’s talk about 30-40% of your electricity bill. That's how much it costs to heat and cool your home or commercial property. A guide for improving efficiency and effectiveness. Energy and HVAC optimization will reduce your electricity costs. A little time getting to know your system and familiarizing yourself with improvement strategies will save money and increase the life of your equipment. Tue, 26 Oct 2010 14:02:44 GMT http://www.pro-engr.com/Articles/HVAC/Manual%20J%20Calculations.htm Pro Energy and HVAC- Manual J calculations are the starting point for sizing your HVAC system. General information about how to do most of the work yourself. Written for the non-mechanically inclined person with no HVAC knowledge. Tue, 26 Oct 2010 14:00:36 GMT http://www.pro-engr.com/Articles/HVAC/Net%20Zero%20Building.htm Pro Energy and HVAC- A general introduction and 2 videos from ASHRAE describing Zero Energy Buildings and future plans for how to achieve this benchmark. Useful to the commercial building owner, architect or HVAC engineer. Tue, 26 Oct 2010 13:59:53 GMT http://www.pro-engr.com/Articles/HVAC/Optimize%20The%20Condensing%20Unit%20Location.htm Pro Energy and HVAC- An article describing the best locations for air cooled condensing units and heat pumps. Overall savings of 1%-2% can be realized just by selecting the right location. Tue, 26 Oct 2010 13:58:18 GMT http://www.pro-engr.com/Articles/HVAC/Building%20Studies%20and%20the%20Mechanical%20Engineer.htm Pro Energy and HVAC-Building studies on HVAC systems and the role of the mechanical engineer. A brief description of a typical study. Tue, 26 Oct 2010 13:57:33 GMT http://www.pro-engr.com/Articles/HVAC/Chiller%20System%20Costs-Air%20Cooled%20VS%20Water%20Cooled.htm Pro Energy and HVAC- This is an overview of an ASHRAE article discussing air cooled chillers and water cooled chillers with results that may change how mechanical engineers design chiller plants. Tue, 26 Oct 2010 13:56:37 GMT http://www.pro-engr.com/Articles/HVAC/The%20Importance%20of%20Rule%20of%20Thumb%20Sizing.htm Pro Energy and HVAC- Rules of thumb are good for the knowledgeable HVAC engineer and I have added my 2 cents worth here. General thoughts about HVAC engineering. Tue, 26 Oct 2010 13:53:56 GMT http://www.pro-engr.com/Articles/HVAC/How%20Much%20Are%20You%20Going%20to%20Pay%20for%20That%20Air%20Buddy.htm Pro Energy and HVAC- This article discusses outside air requirements and how to calculate flow rates. Probably not as professional an article as it should be, but the information and content is relevant if you specify HVAC systems that require outside air. Tue, 26 Oct 2010 13:52:04 GMT http://www.pro-engr.com/Articles/HVAC/Geothermal%20Heat%20Pumps.htm Pro Energy and HVAC-Geothermal heat pumps and how they work. This is an article that discusses the general concept, efficiency, installation costs and life expectancy of a geothermal heat pump. Tue, 26 Oct 2010 13:51:06 GMT http://www.pro-engr.com/Articles/HVAC/Chilled%20Water%20Plant%20Efficiency.htm Pro Energy and HVAC-Chilled water plants consume about 30% of all the energy used in commercial, medical and industrial buildings. This is a brief article about chillers, pumps and other equipment which defines chilled water plant efficiency. Tue, 26 Oct 2010 13:50:15 GMT http://www.pro-engr.com/Articles/HVAC/Solar%20Attic%20Fans.htm Pro Energy and HVAC- Solar attic fans are one of those perfect problem-solving-devices that appear ever so often. If you have a hot attic, this information is for you. Tue, 26 Oct 2010 13:49:28 GMT http://www.pro-engr.com/Articles/HVAC/Ductless%20Split%20Systems.htm Pro Energy and HVAC- Ductless Split HVAC Systems description and application. How they work and relate to HVAC systems. Tue, 26 Oct 2010 13:48:49 GMT http://www.pro-engr.com/Articles/HVAC/HVAC%20Systems%20Ratings.htm Pro Energy and HVAC- A discussion on all those techincal HVAC terms and what they mean. Written for the non-mechanically inclined person with no HVAC knowledge. Tue, 26 Oct 2010 13:48:05 GMT http://www.pro-engr.com/Articles/HVAC/The%20Basic%20Refrigeration%20System.htm Pro Energy and HVAC- If you have ever wondered how a air conditioning system makes cold air, read this article. Written for the non-mechanically inclined person with no HVAC knowledge. Tue, 26 Oct 2010 13:47:22 GMT http://www.pro-engr.com/Category%20Pages/HVAC%20Page/HVAC.htm Pro Energy and HVAC- A page listing HVAC articles on Pro Energy and HVAC site. If HVAC interests you, click and visit the site! Tue, 26 Oct 2010 13:46:33 GMT http://www.pro-engr.com/Articles/Geothermal/How%20Does%20Geothermal%20Energy%20Work.htm Pro Energy and HVAC-Geothermal energy and how it works and relates to HVAC systems. Tue, 26 Oct 2010 13:45:24 GMT http://www.pro-engr.com/Category%20Pages/Geothermal%20Page/Geothermal.htm Pro Energy and HVAC- A page listing geothermal articles on Pro Energy and HVAC site. If geothermal interests you, click and visit the site! Tue, 26 Oct 2010 13:44:39 GMT http://www.pro-engr.com/Articles/Wind/How%20Does%20Wind%20Energy%20Work.htm Pro Energy and HVAC- This article discusses turbine types, turbine components and energy storage. Perfect for the wind power beginner. Tue, 26 Oct 2010 13:43:31 GMT http://www.pro-engr.com/Articles/Wind/Wind_Energy%20Basics.htm Pro Energy and HVAC- This article discusses wind energy basics, turbine types and system costs. Perfect for the wind power beginner. Tue, 26 Oct 2010 13:42:48 GMT http://www.pro-engr.com/Category%20Pages/Wind%20Page/Wind%20Energy.htm Pro Energy and HVAC- A page listing Wind Energy articles on Pro Energy and HVAC site. If Wind Energy interests you, click and visit the site! Tue, 26 Oct 2010 13:42:06 GMT http://www.pro-engr.com/Articles/Solar/Photovoltaics/Site%20Assessment.htm Pro Energy and HVAC- If you are considering renewable energy sources, the first question you need an answer to is how much energy can be harvested at your site. This article describes a DIY method that is cheaper than a full site assessment. Tue, 26 Oct 2010 13:40:57 GMT http://www.pro-engr.com/Articles/Solar/Photovoltaics/Basics%20of%20Solar%20Photovoltaics.htm Pro Energy and HVAC- This article discusses the general concepts of photovoltaics and materials of construction. Perfect for the solar beginner. Tue, 26 Oct 2010 13:40:07 GMT http://www.pro-engr.com/Articles/Solar/The%20Solar%20Power%20Overview.htm Pro Energy and HVAC- This article discusses the general concepts of solar power systems, relative costs and payback on investment. Perfect for the solar beginner. Tue, 26 Oct 2010 13:38:56 GMT http://www.pro-engr.com/Articles/Solar/How%20Does%20Solar%20Energy%20Work.htm Pro Energy and HVAC- This article discusses the general concepts of solar thermal and photovoltaic systems and theory of operation. Perfect for the solar beginner. Tue, 26 Oct 2010 13:38:07 GMT http://www.pro-engr.com/Articles/Solar/Solar_Energy_Basics.htm Pro Energy and HVAC- This article discusses the general concepts of solar energy systems, harvesting methods and costs. Perfect for the solar beginner. Tue, 26 Oct 2010 13:36:32 GMT http://www.pro-engr.com/Category%20Pages/Solar%20Page/Solar_Energy.htm Pro Energy and HVAC- A page listing Solar articles on Pro Energy and HVAC site. If solar interests you, click and visit the site! Tue, 26 Oct 2010 13:35:19 GMT http://www.pro-engr.com/Articles/HVAC/Air_Filters-A_Healthy_HVAC_System_and_Indoor_Air.htm Pro Energy and HVAC-Filtering air is more than using fiberglass filters. Learn about MERV ratings and how they apply to residential and commercial HVAC systems. Tue, 26 Oct 2010 13:33:23 GMT http://www.pro-engr.com/Articles/Geothermal/How%20Does%20Geothermal%20Energy%20Work.htm Pro Energy and HVAC-Geothermal energy and how it works and relates to HVAC systems. Tue, 26 Oct 2010 13:29:44 GMT