The Homemade Heat Pump Manifesto - Page 46 Quote: This is good to know. Now I can reccomend A/C and de-hymidifier compressors for the right reason. Isn't this a good argument for not having any refrigeration equipment inside a house? Refrigerators? Can't this be corrected by design and experimentation? I would assume that this could happen in the field. I'm sure the list could be much, much longer... I built a small heat pump from a de-humidifier that was essentially thrown away because it was of no further value. I also used heat exchangers that I bought, at the time with no idea what their capacity might be. And I brazed it all up without really even knowing how to braze anything. Want to know why I did this? And you know what? And I dug holes for the loop field with a 1/4 horse motor drill (and a shop vacuum). But I did it anyway. And it worked. So Vlad, I have great respect for your experience and training. If you know something that can help us in our efforts to build refrigeration equipment out of junk, please tell us. -AC_Hacker
201 Ways to Arouse Your Creativity Arouse your creativity Electric flesh-arrows … traversing the body. A rainbow of color strikes the eyelids. Creativity is like sex. I know, I know. The people I speak of are writers. Below, I’ve exposed some of their secret tips, methods, and techniques. Now, lie back, relax and take pleasure in these 201 provocative ways to arouse your creativity. Great hacks from Merlin Mann of 43 Folders
Project Gutenberg - free ebooks Convert just about anything to anything else Electric Expansion Valve Control - Feature Articles - Extra Edition - Air Conditioning, Heating & Refrigeration NEWS Electronically controlled electric valves have been accepted for years in larger applications, just as chillers have been, and have proven to add efficiency to the systems. The key to the increase in efficiency is due to their ability to control superheat to a low, stable setting. Since many chillers use almost infinitely variable screw compressors, an expansion valve that has the ability to follow these radical changes in capacity is required. Traditionally, mechanical thermostatic expansion valves (TXVs) are normally rated from about 50 to 110 percent of nominal rating. This rating is based on relatively constant head pressure and liquid quality conditions. These valves may not allow efficient control of the chiller during low load or head pressure conditions. The electric expansion valve (EXV) has the ability to follow load, in most cases, from about 5 to 115 percent of nominal load. Figure 1. Controllers for EXVs are becoming common and generally work in similar ways. Figure 2.
Heroes of History - The Heroic Monomyth As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Best wishes, The Oracle Education Foundation
Thesaurus.com | Find Synonyms and Antonyms of Words at Thesaurus.com Temperature Conversions Instructions From: You may write a numerical value and a permissible unit into the free-form field. Alternatively, the unit may be selected from the selector box. The numerical value may be omitted (default is 1). To: You may select the "wanted" unit from the selector box. Numerical value unsigned integer or decimal number. 3+6 (3 millions) 1-3 (1 thousandth) 1|3 (1 third) Unit You may choose the international symbol or the US name, case is observed. Basic units are separated by "-" or spaces, division is indicated by "/", powers by suffixed positive integers. m2 (= square meters) m2-kg/s2 (= joule, SI unit J) Erroneous symbols in the output in the "conformability" output, negative exponents are incorrectly displayed; the meanings are as follows: / to the -1 . to the -2 - to the -3 , to the -4 + to the -5 Currency Conversion You should follow the link given above. The script makes use of the Unix program units. To the top of this form Conversion formulas for temperatures Index General Chemistry
Aqua Systems efficient Liquid to Refrigerant Heat Exchangers