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 in-line device for controlling a ventilation system for an enclosed space is featured. The ventilation system is configured to produce a first airflow from an external environment to the enclosed space and a second airflow from the enclosed space to the external environment. The in-line device includes a first electrical interface configured to connect to an electrical outlet, a second electrical interface configured to receive a power plug for the ventilation system, and a controller configured to control the ventilation system based on a first parameter of the first airflow and a second parameter of the second airflow.

An energy recovery system for an air handling unit includes a support frame, an energy recovery wheel, and a wheel actuator. The support frame supports the energy recovery wheel within the air handling unit. The energy recovery wheel is configured to rotate about a rotation axis during operation. The wheel actuator is configured to drive the energy recovery wheel to rotate about the rotation axis.

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.

An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.

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.

The ventilation apparatus includes: a ventilation unit that exchanges air in an indoor space and air in an outdoor space, which is a space different from the indoor space, and ventilates the indoor space; a calculation unit that calculates a threshold on the basis of CO.sub.2 concentration of the air in the outdoor space and a selected operation mode selected in advance from a plurality of operation modes; and an operation control unit that controls the ventilation unit such that the amount of ventilation is larger when the CO.sub.2 concentration of the air in the indoor space is higher than or equal to the threshold than when CO.sub.2 concentration of the air in the indoor space is lower than the threshold.

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.

The present disclosure relates to a system and method of controlling the temperature and humidity of a conditioned space. The method and system are based on the two-phase pre-cooling of an airflow prior to dehumidification, wherein the airflow passes through a heat exchanger which initially cools and dehumidifies the air before it enters the dehumidifier for additional dehumidification.