Calculate flywheel mass effect's influence
p>As energy contractors, we are required to perform a basic heat loss or heat gain calculation in order to properly size the heating or cooling plant...
Real-time energy load calculations, Part 4
WE'VE BEEN TALKING for the last three months about how to properly size a heat source when replacing oversized cast-iron boilers that once used solid...
Real-time energy load calculations, Part 3
I PROMISED AT the end of last month's column (pg. 32) to tell you what to do with all the digital information you will have obtained from monitoring one...
Real-time energy load calculations, Part 1
BY MARK EATHERTON HYDRONIC HEATING AUTHORITY OVER THE YEARS, I've had the opportunity to spend many hours in working boiler rooms when the outside temperature...
Thinking Outside the Box DHW Systems
I HEARD A TERM from a contractor customer the other day that conjured up visions of an antique domestic hot water system I remember my dad talking about....
My New, Upside-down DHW System
IN MY DECEMBER 2001 column, I discussed the heating system that Id installed in my own live-in laboratory (Lessons Ive learned from Thistled House, pg....
'Thistled House' Sees New Fuel Efficiency
IN MY DECEMBER 2001 column, I discussed the heating system that Id installed in my own live-in laboratory (Lessons Ive learned from Thistled House, pg....
Learn How to Use Your Combustion Analyzer
TESTING EVERY FLAME-fired appliance you come into contact with is a move in the right direction. We discussed why you need to do this in last months column...
Do You Test Your Gas Appliances For CO?
I ASK THE QUESTION thats in the headline only because I have concerns for you and your loved ones. I didnt used to test any of our gas-fired appliances...
Is a Hydrogen Fuel Cell Generator In Your Future?
AS OF THIS DATE, no less than 120 companies are directly or indirectly involved in the research, development and deployment of combined heat-and-power...
Ground-source heat pumps for radiant, DHW
IN ORDER TO USE the relatively low-temperature water available from ground-source heat pump systems, the designer must consider all the parameters required...
Ground-source heat pumps
IN THIS MONTH'S column we will begin looking at ground source heat pumps as a means of providing efficient heating and cooling to buildings of all shapes...
Best solar DHW pre-heat systems
IN LAST MONTH'S column ("Active and passive solar pre-heat systems," pg. 36 ), the final system we addressed was the closed-loop pressurized system. One...
Active and passive solar pre-heat systems
SOLAR HOT WATER pre-heat systems fall into two basic categories active and passive types with numerous subcategories. A passive solar DHW pre-heater is...
Solar Domestic Hot Water Pre-Heating
SOLAR DOMESTIC HOT water preheating has been around for centuries. A search of solar collector patents shows patents being applied for back as early as...
Future Hydronics: Waste Heat Recovery
COMMERCIAL WASTE heat recovery systems have been around for a very long time. Their recovery efficiencies are a known fact, and their savings have been...
Future of Hydronics: Waste Heat Recovery
RESIDENTIAL WASTE HEAT recovery holds one of the greatest potentials in the effort to reduce energy consumption. Properly applied, it can reduce the thermal...
Hydronics Move Into Condensing Technology
THE COMBUSTION process has taken a major leap forward with the introduction of smaller, easily controllable, variable-speed high-pressure blowers. Although...
The Future of Hydronics: Combustion Technology
FROM THE TIME that man started a fire in a pit in a cave, the process of combustion has intrigued mankind. He has taken it upon himself to make the smaller,...
The Future of Hydronics: Tin Radiators to PEX
IN LAST MONTHS article, we looked at the evolution of heat sources and distribution piping. This month, well look at the heat emitters. Some of the original...
The Past and Future of Hydronic Heating
WITH THE DAWNING of the New Year, I hope this column finds you and yours in good health and looking forward to a prosperous 2004. Ive decided to look...
When Mind-Reading Fails to Work in a Retrofit
ONE OF THE interesting aspects of designing a retrofit mechanical system for the older apartment complex that I described last month (November, pg. 30)...
Performing a 'DHW-ectomy' in a Retrofit
ONE OF THE BIGGER challenges in replacing the domestic hot water system on a multifamily housing project is maintaining service to the users while installing...
Ask Questions for Commercial Boiler Retrofits
MANY OLDER apartment complexes, which were built more than 30 to 50 years ago, are coming up for major boiler and component replacement. Unfortunately,...
Right Physical Plant For Your Snow-Melt Job
IN LAST MONTHS article (pg. 40), we began discussing the many choices for the heating plant for the snow-melt system. This month well get into the of...
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