Energy efficient heating, ventilation or air conditioning [HVAC]

YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS Y02Climate change prevention Y02BINDEXING SCHEME RELATING TO CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS

Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Y02B30/08relating to domestic heating, space heating or domestic hot water heating or supply systems [DHW] Y02B30/10using boilers Y02B30/102Condensing boilers Y02B30/104Moistening the combustion air with condensate from the combustion gases Y02B30/106Removing condensate from the heater Y02B30/108Modular boilers Y02B30/12Hot water central heating systems using heat pumps Y02B30/123Self contained heating units using heat pumps Y02B30/126combined with the use of heat accumulated in storage masses Y02B30/14Central heating systems having more than one heat source Y02B30/16Central heating systems using steam or condensate extracted or exhausted from steam engine plants Y02B30/18Domestic hot-water supply systems using recuperated or waste heat Y02B30/20Heat consumers: Y02B30/22Low temperature radiators: Y02B30/24ceiling, wall or underfloor heating arrangements for being used in combination with water central heating system Y02B30/26Radiant panels electrically heated Y02B30/28Direct fired air heaters: Y02B30/50Systems profiting of external/internal conditions Y02B30/52Heat recovery pumps Y02B30/54Free-cooling systems Y02B30/542Air based Y02B30/545Cooling using dew point control and direct humidifiers Y02B30/547Using energy from the ground by air circulation Y02B30/56Heat recovery units Y02B30/563Air to air Y02B30/566Water to water Y02B30/60Other technologies for heating or cooling Y02B30/62Absorption based systems Y02B30/625integrating combined heat and power generation [CHP] systems Y02B30/64Adsorption based systems Y02B30/66Magnetic cooling Y02B30/70Efficient control or regulation technologies Y02B30/72Electric or electronic refrigerant flow control Y02B30/74Technologies based on motor control Y02B30/741Speed regulation of the compressor Y02B30/743Condensing pressure control Y02B30/745Speed regulation of pumps in flow control systems Y02B30/746Speed regulation of fans in flow control systems Y02B30/748Speed regulation of fans and pumps in cooling towers Y02B30/76Centralised control Y02B30/762of heating or domestic hot water [DHW] systems Y02B30/765of refrigeration machines, plants or systems, including combined heating and refrigeration systems or heat-pumps Y02B30/767of air distribution systems Y02B30/78Ventilation adapted to air quality Y02B30/80Ultrasonic humidifiers Y02B30/90Passive houses Double facade technology Y02B30/92with air flow into the conditioned premises or facilities Y02B30/94Improving the thermodynamic properties of the premises or facilities