Abstract: A thermo-magnetic cycle apparatus includes: a magnetic element having a Curie temperature distribution in a distribution direction. A magnetic-field supplier supplies an external magnetic field to the magnetic element. A pump pumps heat transport medium to flow forward and backward in the distribution direction. The heat transport medium transports heat of the magnetic element. A shift device causes a position of a high temperature end and/or a low temperature end of the magnetic element to move.

Abstract: Methods for installing one or more heating, ventilation, and air conditioning (HVAC) units in an HVAC system include the steps of securing inlet and outlet piping assemblies of the HVAC unit to a bracket, coupling a thermal transfer mechanism of the HVAC unit with the inlet piping assembly and the outlet piping assembly, fluidly coupling a water pump with the thermal transfer mechanism, the inlet piping assembly, or the outlet piping assembly, mounting the HVAC unit by mounting the bracket to the HVAC system, and maintaining alignment of the HVAC unit thermal transfer mechanism, the HVAC unit inlet piping assembly, and the HVAC unit outlet piping assembly while mounting the HVAC unit in the HVAC system. An HVAC unit can include a thermal transfer mechanism, inlet and outlet piping assemblies, a water pump, and a bracket.

Abstract: A system comprising a plurality of rooftop HVAC units having a centralized refrigeration unit is described along with a method for retrofitting existing independent HVAC units into the described system. The resulting multi-unit system offers increased efficiency and reliability over independently operating HVAC units.

Abstract: A thermal reservoir for a two-pipe hydronic air-conditioning system is disclosed. Said thermal reservoir includes a well-insulated tank for alternatively storing hot and cold water. Said thermal reservoir contains plurality of valves for directing hot water stored therein into the two-pipe hydronic air-conditioning system, thereby causing cold water within the two-pipe hydronic air-conditioning system to be displaced therefrom and into well insulated storage tank. Said process is fully reversible in that cold water displaced from the two-pipe hydronic air-condition system into said thermal reservoir may be subsequently directed from the thermal reservoir and restored to the two-pipe hydronic air-conditioning system and hot water therefrom directed back into storage. Accordingly a two-pipe hydronic air-conditioning system may be switched between heating and cooling modes with rapidity and without waste of the energy content of said hot water and said cold water.

Abstract: A variable constant volume cooling/heating unit comprising a warm fluid delivery pipe; a cool fluid delivery pipe wherein the warm fluid deliver pipe and cool fluid deliver pipe lead to a two position three way valve, a modulating three way valve for mixing the flow of fluid, a thermostat to control the two position three way valve and the modulating three way valve, a return fluid pipe, means for pumping the fluid through a coil and means for drawing air to be conditioned over the coil. A damper controlled by the thermostat for controlling incoming outside out into the variable constant volume cooling/heating unit.

Abstract: The invention relates to a controlling method of the discharge of coolant medium, and more particularly to a controlling method of the discharge of coolant medium in the heat exchange wind box. By mainly controlling the discharge of coolant medium in the heat exchange wind box, it is able to directly control the volume of discharged coolant medium that supplies the circulation need of the heat exchange tube according to the variations of the target volumes of environmental heat energy in the freezing and air-conditioning area. Therefore, it increases the operation efficiency of the freezing and air-conditioning equipment and achieves the heat balance stability of the freezing and air-conditioning area. Furthermore, by saving the circulated volume of the coolant medium, it achieves the energy saving objective.

Abstract: A system and method for controlling delivery of conditioned water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future demands for conditioned water by a plurality of zone controllers associated with the plurality of heat exchangers. The system controller is operative to provide conditioned water to the heat exchangers even though current demands for conditioned water may not be sufficient to require the provision of conditioned water to the heat exchangers. The system controller analyzes current demands for conditioned water in combination with future demands for conditioned water to determine if the combined demands exceed a minimum level or number of demands necessary to authorize provision of conditioned water to the heat exchanger.

Abstract: A system and method for controlling delivery of either heated or cooled water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future heating or cooling demands of a plurality of zone controllers associated with the plurality of heat exchangers. The system controller is operative to provide heated or cooled water to the heat exchangers even though current heating or cooling demands may not be sufficient to require the provision of heated or cooled water to the heat exchangers. The system controller analyzes current demands for heating or cooling in combination with future demands for heating or cooling to determine if there is any combination of current and future heating or cooling demands that exceed a minimum level or number of demands necessary to authorize heating or cooling.

Abstract: A system for controlling delivery of conditioned water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future demands for conditioned water by a plurality of zone controllers associated with the plurality of heat exchangers. The system controller is operative to provide conditioned water to the heat exchangers even though current demands for conditioned water may not be sufficient to require the provision of conditioned water to the heat exchangers. The system contoller does this by analyzing current demands for conditioned water in combination with future demands for conditioned water to determine if the combined demands exceed a minimum level or number of demands necessary to authorize provision of conditioned water to the heat exchangers.

Abstract: A system for controlling delivery of either heated or cooled water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future heating or cooling demands of a plurality of zone controllers associated with the plurality of heat exchangers. The system controller analyzes current demands for heating or cooling in combination with future demands for heating or cooling to determine if there is any combination of current and future heating or cooling demands that exceed a minimum level or number of demands necessary to authorize heating or cooling. A start time for the provision of the heated or cooled water is thereafter determined by the system controller in the event that there is any combination of current and future heating or cooling demands that exceed the minimum level or number of demands necessary to authorize a heating or cooling.