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October 2019 Vol.49 No.54 |
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| With the rapid development of economy and urbanization, China underground railway industry is blooming. By the end of 2018, China underground railway in operation reaches over 3000km in 30+ cities. The closed platform screen door is popular in China, which brings designers a question of the effect of air leakage on the air conditioning system load of stations. As statistics, the operation energy consumption of underground railway air conditioning system with platform screen doors accounts for 1/3 of the total, followed to train traction system. |
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• Cause analysis and suggestion on screen door air leakage of underground railway platform • Operation scheme of typical underground railway station in severe cold zone based on piston wind effect • Energy saving effect of adjustable ventilation platform door systems |
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Journal of HV&AC is the media partner of coming global events: AHR EXPO • Time: Feb.3rd-5th, 2020 • Venue: Orange County Convention Center, Orlando, FL USA http://www.ahrexpo.com/ MCE • Time: March 17th-20th, 2020 • Venue: Fiera Milano Rho, Italy http://www.mcexpocomfort.it/ CR EXPO • Time: April 8th-10th, 2020 • Venue: Wuhan International Expo Center, Hubei China http://www.cr-expo.com/ ISH&CIHE • Time: May 11th-13th, 2020 • Venue: New China International Exhibition Center, Beijing China http://www.ishc-cihe.com/ More …… |
Can condensing wall-mounted boiler be a mainstream in a blooming boiler market? The data from BSRIA showed that China domestic shipment of gas-fired wall-mounted boilers in the first half year of 2019 increased 11% to 1.1 million units. It predicts that Chinese total wall-mounted boiler market will be over 3.5 million units in 2019. Comparing with 90% of popularity rate in Europe and USA, it is only 10% in China, which representing a huge potential. CRAA published nameplate code of multi split air conditioning (heat pump) unit The manufacturers must specified the corresponding characteristic of multi split in their factory documents, including IPLV(C), APF, SEER, EER corresponding to outdoor unit type, number and indoor unit type, number and static pressure. The factory document must identified that "the features of indoor and outdoor units of multi split air conditioning (heat pump) will change in case of the different deployments." Air will be a new focus of clean energy Air is a kind of low temperature energy. In 2009, EU identified air-source heat pump as one of renewable energy technology. As the technology developing, there are more and more devices using air-source heat pump, such as air-source heat pump water heater, heating unit and dryer. China is the largest air-source heat pump market in the world. The data showed that air-source heat pump market increased to 2.3 million units in 2018 from 1.3 million units in 2014, with 17% of comprehensive annual growth rate. |
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