Do not need to heat the boiler, but instead use the inexhaustible sea water. Reporters learned from the Qingdao Municipal Environmental Protection Bureau geothermal technology promotion office that by the end of next year, the sea water source heat pump will replace the Haitian contiguous heating station, Zhaoshan Qianhai 900,000 square meters of buildings will enjoy no pollution of the "sea air conditioning." The so-called 'sea air conditioning' is to seawater as a heat source (cold source), the use of water source heat pump technology, converting it into heat (cold energy), to winter heating and summer cooling functions. "Municipal Environmental Protection Bureau Geothermal Promotion Office Director Xue Yuexia Say. "Sea water air conditioning" simple operation, the seawater out, after it passed the plate heat exchanger, the heat extracted, replaced to tap water. After the water temperature slightly higher compressed air compressor, the temperature can be increased to seventy-eight degrees Celsius. The hot water then heats the air and finally the air is delivered to households via the fan coil. According to reports, the entire "seawater air conditioning" project all the water flow through the closed, will not be recycled out of the sea water pollution, it will not produce smoke and sewage, is green energy. The use of sea water heating and cooling does not require the consumption of coal and oil, and without long-distance transport of heat, not only energy, but also greatly reduce costs. The experts estimate that using "seawater air conditioning" technology, in a heating season, the average heating cost per square meter is only 15 yuan (summer average per square meter cooling costs only 5 yuan); if the use of coal heating, per square Rice heating costs about 25 yuan; fuel oil heating 45 yuan; the use of electric boilers is as high as 80 yuan. The use of seawater source heat pump heating technology, in addition to winter heating, summer cooling, usually through heat pump air conditioning technology at any time access to hot water. It is understood that this technology has been widely used in Switzerland, Sweden and other countries more than 20 years. The first seawater source heat pump project in China was piloted in Qingdao Power Station since 2004, and Shima Castle has mastered the technology. The project by the Swedish AP company design, North China Design Institute is responsible for underground pipelines design and planning, investment of about 200000000 yuan, is expected to be completed by the end of next year. Qingdao next step is also planned to promote this technology in the Olympic Sailing Committee, Qingdao Port, Silver Beach area and Jiaonan Shipyard.