An air conditioner controller and a safety protection circuit for the same are provided. The air conditioner controller includes a central processing unit, a drive unit, a safety locking unit and a protection detection unit, where the central processing unit is configured to output an air conditioner control signal; the air conditioner motor drive unit is configured to receive a drive control signal output from the safety locking unit and the detection protection signal, and output a drive signal to control an operation of an air conditioner motor; the safety locking unit is configured to receive the detection protection signal and the air conditioner control signal, output the drive control signal, and control the air conditioner control signal to be transmitted or cut off based on the detection protection signal output from the protection detection unit.

A cryostat includes a cryogenic refrigerator arranged to cool the interior of a cryogen vessel within the cryostat, the cryogenic refrigerator being arranged inside a refrigerator sock. A pipe is controlled by a passive temperature-sensitive valve to selectively provide a path for cryogen gas flow through the refrigerator sock. The passive temperature-sensitive valve is controlled according to a temperature of the cryogen gas supplied from the refrigerator sock to the passive temperature-sensitive valve.

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.

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 determination device includes a refrigerant circuit, an operation determination unit, and a refrigerant determination unit. The refrigerant circuit is made of a compressor, a condenser, an expansion mechanism, and an evaporator that are circularly connected. In a refrigeration cycle operation in accordance with a quantity of heat required by the condensers or the evaporators, the operation determination unit determines whether the refrigeration cycle operation can be normally carried out or not. Upon determination that the refrigeration cycle operation cannot be normally carried out, the refrigerant determination unit determines whether a refrigerant in the refrigerant circuit is regenerable or not, based on a result of the determination. Thus the determination device is provided by which an effort involved with determination as to whether the refrigerant is regenerable or not can be reduced.

An ice collection area is disposed inside the cabinet proximate an ice maker. An ice storage area is disposed inside the cabinet. A first relocatable ice bin is disposed inside the cabinet. The first relocatable ice bin is disposed in one of the ice collection area and the ice storage area. A second relocatable ice bin is disposed inside the cabinet. The second relocatable ice bin is disposed in the other of the ice collection area and the ice storage area.

A space-saving, high-density modular data pod and a method of cooling a plurality of computer racks are disclosed. The modular data pod includes an enclosure including wall members contiguously joined to one another along at least one edge of each wall member in the shape of a polygon and a data pod covering member. Computer racks arranged within the enclosure form a first volume between the inner surface of the wall members and first sides of the computer racks. A second volume is formed of second sides of the computer racks. A computer rack covering member encloses the second volume and the data pod covering member form a third volume coupling the first volume to the second volume. An air circulator continuously circulates air through the first, second, and third volumes. The method includes circulating air between the first and second volumes via the third volume and the computer racks.

The present disclosure relates to a heating ventilation and air conditioning (HVAC) system. The system includes a primary heat transfer loop configured to be disposed at least partially outside of a building, and the primary heat transfer loop includes a heat exchanger, a compressor configured to compress a refrigerant, where the refrigerant is reactive, a condenser configured to receive and condense the refrigerant, and an expansion device configured to reduce a temperature of the refrigerant. The system further includes a secondary heat transfer loop configured to circulate a two-phase fluid at least partially inside the building, wherein the two-phase fluid is less reactive than the refrigerant. The secondary heat transfer loop includes the heat exchanger, where the heat exchanger is configured to transfer energy from the two-phase fluid circulating in the secondary heat transfer loop to the refrigerant, and an evaporator configured to evaporate the two-phase fluid by exchanging energy with an air supply stream flowing across the evaporator.

One aspect presents a controller that comprises a control board, a microprocessor located on and electrically coupled to the control board, and a memory coupled to the microprocessor and located on and electrically coupled to the control board. The controller is configured to receive an operating parameter signal and recalculate a first maximum heating % demand to a second maximum heating % demand that is greater than the first maximum heating % demand, when a value of the operating parameter signal exceeds a predetermined value, and operate the HP system based on the second maximum heating % demand.

A coupling harness useful with a HVAC mini-split system includes a first interface connected to a thermistor, a second interface connected to a condensate overflow sensor and a control device interface connected to a HVAC electronic control device. The first and second interfaces can notify the control device interface of the existence of an alarm condition of the thermistor and condensate overflow sensor, respectively. The control device interface can actuate the HVAC electronic control device in response to such notifications that an alarm condition exists for the thermistor or condensate overflow sensor.