Defrosting heater evaporator

Types of defrosting heater evaporators

To clarify the kinds of defrosting heater evaporator available for bulk buyers, a product table is shown below with additional descriptions:

• Type

  Foil heater

• Description

  A defrosting heater for evaporators with flexible, customized heating solutions. Foil heaters have even heat distribution, making them efficient for applications that need consistent heat.

• K

  Known for their compact construction, flexibility and lightweight properties, foil heaters are suitable for variable radiators or small limited spaces. They also have a long lifecycle with low maintenance costs.

• Type

  Mica round pipe heaters

• Description

  Defrosting heaters made for round pipe applications. They come in various lengths and wattages to fit different pipes and round evaporator needs. The heaters have a robust construction to withstand industrial environments.

• K

  Mica round pipe heaters are versatile as they can be mounted on several round pipes. Their consistent heating helps to prevent the formation of frost or ice, which could obstruct the pipes or negatively affect processes.

• Type

  Air heater

• Description

  A frost prevention heater for evaporators designed to heat the air directly. The aim is to prevent the build-up of frost or ice in areas with low temperatures.

• K

  By targeting the air, the heaters create warm air circulation that helps to keep any frost or ice from forming on coils or evaporator surfaces. This ensures many refrigeration and air conditioning systems work well.

Function and Features

• Temperature Control:

  They have temperature control systems to maintain ideal evaporator temperatures for efficient operation. These systems regulate the refrigerant and ensure the correct temperature for effective heat exchange and refrigeration.

• Defrosting Mechanism:

  Refrigerators have a defrosting mechanism that prevents excessive frost buildup on evaporator coils. Frost accumulation can hinder the coils' ability to absorb heat, which affects cooling efficiency. The defrosting system regularly removes ice or frost from the coils to keep them clear and ensure optimal cooling performance. The mechanism can use different methods depending on the refrigerator model. Automatic refrigerators usually have self-regulating defrosting systems that initiate periodic defrost cycles. During a defrost cycle, the compressor stops running, and the refrigerator temporarily raises its temperature to melt any accumulated ice or frost on the evaporator coils. Manual defrost models require users to initiate defrosting by turning off the compressor or pressing a defrost button at set intervals.

• Power Supply:

  Defrosting heater evaporators need a reliable power supply to operate the heating element for effective defrosting. They typically run on the same power supply as the refrigeration system, often 110V or 220V AC, depending on the country's electrical standards. They draw electricity to power the heating element, which generates heat during defrost cycles to melt any ice or frost on the evaporator coils.

• Safety Features:

  Defrosting heater evaporators have several important safety features to ensure safe operation and prevent accidents. One key feature is a thermostat, which monitors and regulates temperatures during defrost cycles to prevent overheating or excessive frost melting. The thermostats help maintain safe temperature levels and protect components from damage. In addition to the temperature control system, safety devices, and defrosting mechanisms, they also have power supply and installation requirements. Installers should follow the manufacturer's instructions when installing defrosting heater evaporators. Proper installation ensures that all safety features work effectively.

Scenarios of defrosting heater evaporator

Defrosting heater evaporators have multiple usage scenarios across various industries, including refrigeration, metallurgy, and construction.

• Refrigeration Industry: These heaters are extensively used in the refrigeration industry to prevent ice formation in refrigeration systems and keep smooth operation of the system. They are also utilized in chillers to maintain efficient heat exchange and prevent ice buildup that can hinder functionality.
• Food Processing Industry: Food processing industries use defrosted heater evaporators to maintain the temperature of their storage and ensure their safety. They are installed in all food processing plants to avoid any ice formation in their refrigeration plants that may cause food damage.
• HVAC Systems: HVAC systems employ heater evaporators to avoid defrosting issues in heat exchangers. These systems are found in residential and commercial buildings. Heater evaporators help maintain consistent airflow.
• Industrial Processes: Numerous industrial applications use defrosted heater evaporators in oil and gas to keep their production processes organized and efficient. They are also used during metalworking and in hydraulic systems for effective cooling.
• Agricultural Applications: These heater evaporators are frequently employed in agricultural practices to avoid moisture buildup in greenhouses and create a safe growing environment. They also help maintain sensitive plant heating systems.
• Marine Applications: Marine applications utilize defrosted heater evaporator coils to prevent ice formation on the deck and ensure crew safety. They are also used in boat engines and to maintain proper temperatures in engine compartments.

How to choose defrosting heater evaporator

When buying a defrosting heater for an evaporator, it is important to know which one will be suitable for specific applications. There are a few tips to follow when purchasing an electric heater.

• Heater type: As stated before, there are multiple kinds of defrosting heaters. Some are flexible and can be wrapped around the pipes while others are tubular in shape. Choose a heater that is appropriate for the diameter and length of the pipes.
• Power: Electric heaters usually vary in wattage. The power is calculated by taking into account the wattage per square foot. A higher heater would mean a quicker process and vice versa. However, when choosing a heater, it is important to take into consideration the power supply and circuits available on-site.
• Voltage: The heaters operate on different voltages, including 120V, 208V, 240V, 277V, and 480V. Before purchasing a heater, it is important to know the voltage of the circuits on-site so that the heater can be connected without any problems.
• Material: The material of the heater will depend on where it is installed. If it is outdoors, the heater must be corrosion resistant. Outdoor heaters usually have a pipe with terminal pins that are kept inside a junction box. The box is weatherproof and protects the wires from the outside.
• Plant type: Facilities or plants have different heating requirements. Refrigerant heaters are needed in cold rooms to prevent the accumulation of frost or ice on the evaporator coils. Heaters are also installed on refrigerant lines to promote safe and efficient condensation and liquid flow in the filter drier or expansion device.

Defrosting heater evaporator Q&A

Q1: Is it possible to control the temperature of a defrosting heater?

A1: Yes, it is possible. A thermostatic control is usually used to regulate the temperature of a defrosting heater between 50 and 60°C.

Q2: How should the defrosting heater be maintained?

A2: To ensure that defrosting heaters work fine, they should be regularly checked for dirt and damage. Also, the heaters might need to be replaced after some time, depending on usage, wear, and tear.

Q3: What power supply do the different types of defrosting heaters use?

A3: Various defrosting heater types operate on different power supplys. For example, individual and multiple heater bands can operate on a power supply of 220/240V or 100/120V. However, they can also work with other voltages, depending on the specs. Immersion heaters typically operate on a 220/240V supply, but like the heater bands, they can work with other voltages based on specifications. Pipe heaters operate on either a 220/240V or a 100/120V supply similar to the heater bands. Unlike the others, self-regulating heaters use a 120V or 240V power supply.

Q4: Are there standards and approvals that defrosting heaters need to comply with?

A4: Defrosting heaters need to comply with different standards and approvals to ensure they are safe to use. The heaters have to comply with the standards and approvals pertinent to their individual specifications. Heaters that are exempt from the CE mark can be used in non-European Union countries. Manufacturers should provide documentation proving that the heaters comply with the required standards and regulations.