Truck reefer unit is pivotal for cold chain transportation. No matter what kind of vehicle you drive, the working condition of refrigeration unit has a direct bearing on the safe and successful delivery of temperature-sensitive cargoes. Though daily maintenance could be petty and boring, it is not insignificant. On the contrary, frequent little checks and maintenance could save you a big amount of loss caused by machine breakdown and cargo damage. Now, here are some tips for you to maintain your truck reefer unit efficiently.

With the rapid development of online shopping and the emergence of online trade platforms, when intending to buy a refrigeration unit for their vehicle, it is convenient for drivers to make an overall comparison among several brands and different machine types. But too many choices can make it hard to decide. So, how can we choose a suitable reefer unit online efficiently? Let Kingclima help you.

Thinking that it is amazing for a small truck reefer unit to make a big box stay cooled all day long? Want to know how a truck reefer unit works? Take a look at how a reefer unit actually works with Kingclima!

 Precooling, the rapid removal of heat from freshly harvested vegetables, allows the grower to harvest produce at optimum maturity with greater assurance that it will reach the consumer at maximum quality. Precooling benefits the vegetable by slowing the natural deterioration that starts shortly after harvest, slowing the growth of decay organisms and reducing wilt by retarding water loss. 

The world is now facing the serious problem of global warming, which is also a challenge and pressure for cold chain transportation. Carbon emission concerns drivers and fleet managers as many governments have implemented carbon emission policies. Traditional truck refrigeration units are driven by diesel, which could bring massive carbon emissions. As is shown by statistics, the sales amount of traditional diesel-driven vehicles and truck reefer units is dropping in recent years while electric ones increasing.

Cold chain transportation is a thriving industry. It plays a more and more important role in food transportation, chip transportation, or even in nowadays COVID-19 vaccine transportation. Cold chain transportation can be called both lucrative and meaningful. On the long trip of cold chain transportation, how can we save the cost while maintaining high effective and high quality at the same time? Kingclima may answer your question.

Expansion valve is an important part of refrigeration system, which is generally installed between the liquid storage tank and evaporator. The expansion valve makes the liquid refrigerant with medium temperature and high pressure become wet steam with low temperature and low pressure through its throttling, and then the refrigerant absorbs heat in the evaporator to achieve refrigeration effect. The expansion valve controls the flow of the valve through the change of superheat at the end of the evaporator to prevent the insufficient utilization of evaporator area and cylinder knocking.
In short, the expansion valve is composed of valve body, temperature sensing package and balance pipe.

In the refrigeration unit, if water enters into the refrigerant circulation system, the water will react with the refrigerant, resulting in corrosion of pipelines and metal parts, and deterioration of lubricating oil; for Freon refrigeration system, it is also easy to cause “ice jam” phenomenon of the throttle valve.

In short, the function of solenoid valve is to cut off the circuit of the system when the compressor stops, so as to avoid liquid hammer when the compressor starts next time. it is generally used in a larger refrigeration system.