Walk in high and low temperature aging room, car battery low-temperature maintenance room

Adopting an intelligent automatic conversion expansion system, the refrigerant flow rate and intelligent electric heating power are automatically adjusted according to the load

The data value (%) matches the temperature rise and fall (load) automatic simulation output power data output value

The operating power of this project is about 10KW. By adding a cold balance energy-saving device, this design can save more than 30% electricity compared to traditional designs

structural characteristics

Thermal insulation enclosure structure

Outer wall material: high-quality color steel plate

Inner wall material: 304 stainless steel plate

Floor material: Non slip aluminum plate

Box insulation material: rigid polyurethane foam+rock wool (100mm thick) (flame retardant grade B1)

Air conditioning channel A

Adopting a multi blade centrifugal circulating fan, reinforced with high and low temperature resistant rotating blades made of aluminum alloy, to achieve forced convection.

FLOW THOW air supply method; Horizontal diffusion, vertical heat exchange, arc-shaped cycle.

Adjustable side blowing air outlet and protective net return air outlet.

Standard configuration of test chamber

Observation window: 1 set of transparent electric heating film insulated tempered glass (located on the door)

1 set of indoor lighting fixtures

Upper computer communication software CD, 1 communication cable

Double hinged door with observation window, lighting, anti condensation electric heating device for window/door frame

Control panel controller display screen, RS232 computer communication interface, power switch, and status indicator light

Mechanical room refrigeration unit, water tray, drainage hole, condenser unit

Distribution control cabinet IO board, machine tool transformer, ballast, intermediate relay, time relay, solid-state relay, AC contactor, thermal relay, fuse, air switch

Heater 1. Nickel chromium alloy electric wire heater

Heater control method: contactless equal period pulse width modulation, SSR (solid-state relay)

Heater power: PID automatic control output quantity

The power cord and drain hole are located on the back of the box

Process details:

The protection measures for the compressor, such as automatic suction and discharge pressure, have been fully considered in the system design

Protection function to extend the service life of the compressor

The refrigeration system pipeline adopts high-quality oxygen free copper pipes, which are welded with nitrogen protection to avoid traditional welding methods inside the copper pipes

The formation of oxides on the wall can cause damage to the refrigeration system and compressor

The suction/discharge pressure of the compressor is directly displayed by a pressure gauge

To prevent water from flowing freely after defrosting on the compressor, a stainless steel water collection tray is installed at the bottom of the compressor to collect the collected water

Concentrate the discharge from the lower back of the box

In the design of the refrigeration system, sufficient consideration has been given to vibration reduction measures during unit operation to avoid operational vibrations and temperature fluctuations

The deformation and leakage of refrigeration pipelines caused by temperature changes can improve the reliability of refrigeration systems

Install damping springs and rubber pads at the bottom of the compressor to reduce the transmission of compressor vibration to the unit frame

The suction and exhaust pipes of the compressor use Sumitomo brand metal shock absorber hoses from Japan to reduce vibration transmission through the refrigeration pipeline

The process pipeline of compressors with a diameter of less than 10mm adopts shock-absorbing bends and distal fixation to avoid resonance

refrigeration system

The working method adopts the French Taikang brand refrigeration compressor, which is efficient and reliable, with a cascade refrigeration cycle

The throttling device adopts the Japanese Eginomiya intelligent automatic conversion electronic expansion valve, which can automatically adjust the refrigerant flow according to the load, exerting faster, more stable and energy-saving efficiency

Evaporator finned tube heat exchanger (also used as dehumidifier)

Condenser water-cooled type: shell and tube heat exchanger.

The refrigerant used is the American Honeywell environmentally friendly refrigerants R404A and R23, which meet international environmental requirements

Plate heat exchanger

The stacked refrigeration system adopts a plate heat exchanger with small heat transfer temperature difference, high heat transfer efficiency, and compact appearance

Walk in high and low temperature aging room, car battery low-temperature maintenance room Walk in high and low temperature aging room, car battery low-temperature maintenance room