NĂNG LƯỢNG ĐỊA NHIỆT geothermal HVAC

[...]... Coal-Fired Electricity for Geothermal versus Natural Gas Summary 1 4 7 8 11 11 12 14 16 17 2 Heat Transfer and HVAC Basics Understanding Heat Transfer Heat Transfer and Geothermal HVAC The Main Parts of a Geothermal System ... plastic pipe in the 1970s, and the work of Dr Bose, geothermal heating and cooling entered the modern age and has been growing by leaps and bounds ever since What Is Geothermal? The word geothermal has two parts: geo, meaning earth, and thermal, meaning heat Thus, geothermal concerns using heat from the Earth However, there are a few different applications of geothermal technology The heat of the Earth can... support geothermal HVAC to deal with peak summer demand There is no better tool to lower their demand costs than geothermal, ” argues Ted Chittem of Air Perfect This is partly because, of all on-site renewable energy technologies—solar, wind, tide, and the like geothermal systems have the shortest payoff periods, typically only a few years (see Chap 10 to calculate your own payback period) Geothermal. .. allowed for $1500 tax credits for air-source (nongeothermal) residential systems that meet certain criteria That stops at the end of 2010 After that, the only air-conditioning and heating product left on the stimulus radar is the little-known geothermal system, the subject of this book The tax credit for geothermal heating, ventilation, and air-conditioning (HVAC) will be in force until 2016, offering an... their property Still, many energy experts are bullish on geothermal and expect it to grow over the next few years Today, there are more than 8900 megawatts (MW) of utility-scale geothermal capacity in 24 countries, enough electricity to meet the annual needs of 12 million typical U.S households, according to the Geothermal Energy Association Geothermal plants produce 25% or more of the electricity... American homeowners now install more than 50,000 geothermal heat pumps Stella estimates the total market for geothermal HVAC in the United States at 3.7 billion dollars for 2009, including equipment and installation costs (and not reduced by government or other incentives, which you can learn about in Chap 8) Priority Metrics Group predicts a growth rate of 32% for geothermal AC to continue for the next few... of the cost Geothermal HVAC systems are exceptionally quiet and reliable, and they tend to produce especially even heat or coolness Judging by recent developments, there is a good chance that geothermal heating and cooling systems will become a required standard in at least some sectors of the building industry before the end of the decade, and possibly by 2016 Unlike solar or wind power, geothermal. .. 42 3 Geothermal Heat Pumps and Their Uses Passive and Forced-Air Earth-Coupled Duct Systems Water-Source, Forced-Air Heat Pumps (Water-to-Air Heat Pumps) Direct Expansion Geothermal Heat Pumps 45 47 48 52 v vi Contents Water-to-Water Heat Pumps (Heat Pump Chillers and Boilers) Applications of Geothermal. .. reducing the peak demand that stresses our power grid, thereby reducing the need for new power plants Geothermal is certainly an effective way to reduce our greenhouse gas emissions Whether you’re a contractor or a consumer, you should be able to pick up this book and learn what to expect from geothermal HVAC, the common pitfalls to watch out for, what to say to whom, and how you can benefit from the quality... Energy Calculations and Value Summary 120 120 124 7 Understanding Pricing of Geothermal Systems Factors That Affect the Price of Geothermal HVAC Efficiency Ratings Quality System Sizes .