Systems, apparatuses, and methods are provided herein for providing temperature control. An apparatus for temperature control comprises a portable housing configured for delivery of items, an insulated storage compartment in the portable housing and configured to hold a plurality of items during a transport of the portable housing, a temperature control device configured to affect the temperature inside the insulated storage compartment, and a host coupler configured to couple with a host temperature control system to allow the host temperature control system to affect the temperature inside the insulated storage compartment. Wherein the temperature control device is configured to affect the temperature inside the insulated storage compartment without the host coupler being coupled to the host temperature control system.

A dynamic receiver is included in parallel to an expander of a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The dynamic receiver allows control of the refrigerant charge of the HVACR system to respond to different operating conditions. The dynamic receiver can be filled or emptied in response to the subcooling observed in the HVACR system compared to desired subcooling for various operating modes. The HVACR system can include a line directly conveying working fluid from compressor discharge to the dynamic receiver to allow emptying of the dynamic receiver to be assisted by injection of the compressor discharge.

A first valve is connected between a compressor and a first heat exchanger. A second valve is connected between the first heat exchanger and a expansion valve. When a start condition of the heating operation is satisfied and when a specific condition is satisfied, a controller starts supplying refrigerant from the compressor to the first valve, and then, opens the first and second valves. The specific condition is a condition indicating that a first heat exchange capability of the first heat exchanger is higher than a second heat exchange capability of a second heat exchanger. When the start condition of the heating operation is satisfied and when the specific condition is not satisfied, the controller opens the first and second valves, and then starts supplying the refrigerant from the compressor to the first valve.

A temperature control device for controlling a temperature of a temperature adjustment target part is provided. A communication module of the temperature control device is configured to store target temperature information of each of the temperature adjustment target parts included in a communication frame periodically received via a field network in a predetermined position of a memory, and an arithmetic operation module of the temperature control device receives the target temperature information of each of the temperature adjustment target parts, receives refrigerant temperature information from each of temperature sensors corresponding to each of the temperature adjustment target parts, and calculates each of control parameter for adjusting an opening degree of each corresponding control valve so that each temperature of the temperature adjustment target parts becomes a target temperature indicated by the received target temperature information based on the received target temperature information and the received refrigerant temperature information.

A recreational vehicle air conditioning system supports multiple recreational vehicle air conditioning units having closed air conditioning circuits and a controller that is electronically coupled to each of the recreational vehicle air conditioning units to control each of the closed air conditioning circuits to regulate an overall power consumption of the multiple recreational vehicle air conditioning units. A recreational vehicle air conditioning system may also support multiple recreational vehicle air conditioning units where a refrigerant line set is coupled between the recreational vehicle air conditioning units such that a compressor in one of the recreational vehicle air conditioning units is capable of supplying refrigerant to the evaporators of the multiple recreational vehicle air conditioning units, and such that valves coupled in series with each of the evaporators may be regulated to control cooling by each recreational vehicle air conditioning unit.

A method for controlling a vapour compression system (1) is disclosed. A mass flow of refrigerant along a part of the refrigerant path is estimated, based on measurements performed by one or more pressure sensors (10, 12, 13) for measuring a refrigerant pressure at selected positions along the refrigerant path and one or more temperature sensors (11, 14) for measuring a refrigerant temperature at selected positions along the refrigerant path. A refrigerant pressure or a refrigerant temperature at a selected position a pressure sensor (10, 12, 13) or temperature sensor (11, 14) along the refrigerant path is derived, based on the estimated mass flow. The vapour compression system (1) is allowed to continue operating, even if a sensor (10, 11, 12, 13, 14) is malfunctioning or unreliable.

A system includes: a piping with a working gas encapsulated therein and a prime mover and load incorporated in the piping. The prime mover includes a prime mover-side heat accumulator and heat exchangers connected to opposite end portions of the heat accumulator. The load includes a load-side heat accumulator and heat exchangers connected to opposite end portions of the heat accumulator. The piping includes a looped piping portion having a looped shape and a branch piping portion branching from a branching point p in the looped piping portion, and the prime mover is incorporated in the branch piping portion and load is incorporated in the looped piping portion. A blocking film is inserted at a position in a vicinity of the branching point p. Consequently, a thermoacoustic temperature control system that enables enhancement in durability of a blocking film inserted in a part of a looped piping portion is provided.

A method for determining a level of refrigerant charge in a cooling circuit of an air-conditioning system and a module for leak detection are provided. The method includes determining a total quantity of refrigerant contained in the cooling circuit of the air-conditioning system solely based on data internal to the air-conditioning system.

A system and method for delivering a refrigerant to a refrigerant system. The system includes a distribution system comprising a distribution vessel, a transfer line, at least one pump, a distribution line and a distribution line branch arranged and disposed to transfer refrigerant from the distribution vessel to the refrigerant system. The system additionally includes a monitoring system comprising one or more sensors arranged and disposed to measure at least one distribution parameter within the distribution system and a recovery system arranged and disposed to selectively receive refrigerant based upon the refrigerant suitability for use in the refrigerant system.

A multi-stage refrigeration system (100) includes: a refrigeration loop (110), which includes a gas suction port of a multi-stage compressor (111), a condenser (112), a first throttling element (113), an evaporator (114) and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (120), which includes an economizer (121), a second throttling element (122) and a first control valve (123), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (130), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve (131) is arranged.