The disclosure relates to a heat transfer assembly for a rotary regenerative heat exchanger. The assembly includes a rotor arranged between at least two separated fluid flow passages passing flow axially through the rotor, where each flow passage is connected to a sector part of the rotor. The assembly further includes a plurality of channels in the rotor for flowing a fluid through the rotor, each of the channels is enclosed by heat transfer and heat accumulating surfaces in the rotor, and the heat transfer and heat accumulating surfaces of the channels are made in a material providing an average axial thermal conductivity less than 100 W/mK arranged to reduce the Longitudinal Heat Conductivity of the rotor.

A heat exchange ventilator includes: a temperature adjustment coil provided downstream of the heat exchanger in a supply air passage to heat or cool supply air; a supply air temperature measurement unit provided downstream of the temperature adjustment coil in the supply air passage to measure a supply air temperature; and a control unit controlling operation of the blower unit and the temperature adjustment coil. The control unit performs blowing temperature moderation control of performing ventilation by controlling operation of at least one of the blower unit and the temperature adjustment coil to moderate blowing temperature of the supply air blown out from the casing, based on a result of comparison between a lower limit blowing temperature of the supply air blown out from the casing, an upper limit blowing temperature of the supply air blown out from the casing, and the supply air temperature.

An air conditioner unit includes a housing with an outdoor heat exchanger assembly and an indoor heat exchanger assembly therein. A makeup air intake duct an a makeup are exhaust duct are disposed above the housing parallel to each other. The air conditioner unit also includes a heat exchanger having a first coil and a second coil. The first coil is disposed within the makeup air intake duct. The second coil is disposed with the makeup air exhaust duct. The heat exchanger also includes a first pipe connecting an outlet of the first coil to an inlet of the second coil and a second pipe connecting an outlet of the second coil to an inlet of the first coil.

A ventilation device with a through housing that is a duct for an air jet flow having the through housing connected to an opening of a building partition, with a stationary regenerative heat exchanger and a pumping section formed of a centrifugal fan of constant rotation direction and a main reversible air jet driver with an individual drive arranged in series inside the housing, characterized in that the heat exchanger is provided with a metallic pressure vessel with at least one heat exchange system attached to walls of the pressure vessel, wherein an interior of the pressure vessel is filled with a thermodynamic working agent and connected to a cyclic discrete pressure control system of the working agent.

A ventilation and air-conditioning system includes: a heat-exchange ventilation apparatus discharging air in space to be ventilated drawn in from a first inlet to outdoors via a heat-exchange element, and blowing air in outdoors from a first outlet into the space to be ventilated via the heat-exchange element; and an air-conditioning apparatus including an indoor unit including a second inlet and a second outlet each installed in the space to be ventilated, and an outdoor unit installed outside the space to be ventilated, and drawing in air in the space to be ventilated from the second inlet and blowing the air from the second outlet into the space to be ventilated. The air-conditioning apparatus performs anti-freezing operation assist operation to blow air from the second outlet toward the first inlet, based on an anti-freezing operation assist request level indicating magnitude of risk of freezing occurring in the heat-exchange element.

A heat recovery air-conditioning hot water system and a refrigerant flow control method therefor. The heat recovery air-conditioning hot water system includes a compressor, a condenser, heat exchangers, an indoor unit, a first throttling device, a second throttling device, a first reversing valve, and a second throttling device, wherein the first reversing valve is used to control the refrigerant switching of the indoor heat exchanger, so as to realize the switching of cooling and heating modes; the second reversing valve is used to control the refrigerant switching of the outdoor heat exchanger, so as to realize the operation switching of cooling and heating modes of the outdoor heat exchanger; and an exhaust pipe of the compressor is respectively connected to the first reversing valve, the second reversing valve, and the water-side heat exchanger by means of a water-side high-pressure air pipe.

In the application, since the flow of air outside the vehicle compartment flowing through the upstream heat exchange part and the flow of air outside the vehicle compartment flowing through the downstream heat exchange part are opposite flows, a second heat exchanger through which the air outside the vehicle compartment flowing from the first fan through the downstream heat exchange part flows, a first heat exchanger is an orthogonal heat exchanger, the second heat exchanger that is a component of a refrigeration cycle execution system, the air in the vehicle compartment, which flows in from the inside air inlet by the rotation of the second fan and is discharged from the outlet outside the vehicle through the first heat exchanger, and the air outside the vehicle compartment, are exchanged with the first heat exchanger, it can be miniaturized along with the improvement of electricity cost.

An air handler includes a housing with a heat exchanger core. The housing includes a faceplate, a roof panel, a base panel, a first side panel, and a second side panel. A first tunnel and a second tunnel are connected to the housing at the faceplate. A septum protrudes from the faceplate and connects the core at a front edge. The air handler further includes a first recirculation path and a second recirculation path inside the housing. The first and second recirculation paths are defined by the septum, the housing, and the core. The first and second recirculation paths are configured to direct a portion of airflow from the first tunnel to the second tunnel. The air handler further includes a first damper and a second damper disposed on the faceplate and configured to obstruct the first recirculation path and the second recirculation path respectively.

Provided is a laminate having low air permeability and excellent moisture permeability in a low temperature and low humidity environment. The laminate is provided with a porous substrate and a moisture-permeable membrane disposed on one side of the porous substrate, the laminate having an air resistance of 3000 seconds/100 cc or greater based on the Gurley method according to JIS P8117-2009 and a first moisture permeability of 300 g/(m.sup.2.Math.24 h) or greater based on a moisture permeability testing method (the cup method) according to JIS Z0208-1976 under the conditions of a temperature of 5° C., a relative humidity of 45%, and a wind speed of 0.2 m/s or less.

Provided are an air conditioning device and method. The air conditioning control device includes a ventilation fan, a memory storing at least one instruction, and at least one processor connected to the memory, in which the at least one processor is configured to, by executing the at least one instruction, determine, among a plurality of rooms, a first room from which thermal energy is to be recovered and a second room to which the thermal energy to be recovered is to be supplied, based on at least one of a sensor value of a sensor in a room among the plurality of rooms, a use schedule of at least one room among the plurality of rooms, and a user input, and drive the ventilation fan to exchange thermal energy of the first room and thermal energy of the second room.