HOW TO CHOOSE A MICRO CHANNEL PLATE?
A micro channel plate is a device that transfers heat energy from one medium to another without mixing them. Accordingly, the selection of a plate heat exchanger for hot water supply carries out depending on the purpose, the required temperature values, the type of medium, and the conditions of use.
After determining the listed criteria, an accurate calculation of the parameters of the heat exchanger carries out.
MEDIUM TYPE
The micro channel plate can work with different substances: gas, oil, water, steam. Their physical and chemical properties will differ, so they must determine in advance before choosing a plate heat exchanger. Aggressive substances require high strength characteristics of the device.
If a non-standard medium is common, the values
TEMPERATURES OF MEDIA AT THE OUTLETS AND INLETS OF THE MICRO CHANNEL PLATE
The main function of the heat exchanger is to change the temperature characteristics of the medium. Therefore, the values
ALLOWABLE PRESSURE LOSSES OF THE HEATED AND COOLED SIDES
The working medium, when passing through the micro channel plate, loses part of the pressure. This is due to design features. In most processors, pressure is an extremely important characteristic, which is why it is necessary to accurately calculate the allowable losses before choosing a device.
So, for example, when choosing a heat exchanger for a house, you need to take into account that insufficient pressure will not allow water to rise to the upper floors.
MAXIMUM OPERATING TEMPERATURE AND PRESSURE
The micro channel plate must come of materials that are resistant to specific temperatures and pressures. Therefore, the selection of a heat exchanger for different conditions will differ.
HEAT LOAD
It transfers part of the energy from one medium to another. The transfer rate, the permissible volume of the medium, the desired temperature regime will affect the size of the heat exchanger.
CALCULATION OF CHARACTERISTICS
When all the technical operating conditions have been determined, they proceed to the calculation of characteristics that will help to select a micro channel plate for specific conditions. The following types of calculations carry out:
- Thermal
- Mechanical
- Calculation of temperature stresses
- Moreover, composite
- Hydraulic
- Furthermore, constructive calculation
- Strength
- Verification
WHAT IS THE PURPOSE OF THERMAL CALCULATION?
Thermal calculation is the main parameter that must calculate before choosing a micro channel plate for heating. It carries out for the following purposes:
- Determination of heat transfer efficiency;
- Furthermore, determination of the area of
heat exchange surfaces; - Similarly, determination of the final temperature;
- Mass calculation of the coolant;
- Moreover, calculation of other operating parameters of the installation.
WHAT IS MECHANICAL CALCULATION?
When selecting a plate micro channel plate associates with the structural ability of the apparatus to withstand internal and external loads. Parts of the device can be subjected to various mechanical loads, including tension and compression, torsion, shear, bending, vibration.
Thermal stress is a parameter associated with linear and volumetric changes in the geometric dimensions of a structure, which results by thermal expansion.
Composite calculation associates with the optimal mutual arrangement of serial and parallel channels inside the apparatus. It takes into account the data obtained from the calculation of thermal characteristics.
WHAT IS THE HYDRAULIC CALCULATION?
Hydraulic calculation is a parameter associated with the nature of the movement of the coolant inside the apparatus. The speed of movement of the liquid medium in the micro channel plate comes into account, which is directly relevant to the coefficients of heat transfer and heat transfer.
Constructive calculation is common at the design stage of the apparatus. It takes into account the values
Strength analysis is the determination of the ability of a structure to withstand any type of load. The apparatus must function under the influence of all possible external and internal factors.
WHY VERIFICATION CALCULATION IS CARRIOD OUT?
The verification calculation carries out at the last stage in order to check the device's performance under specific operating conditions. For example, a similar type of calculation needs to determine the thermal performance for an environment with specific environmental parameters.
The above calculations will help to obtain a set of required parameters at the output, without which it is impossible to design a micro channel plate.
WHY DO YOU NEED RELIABLE MICRO CHANNEL PLATE?
It is the collapsible plate heat exchanger that is most common, since it has the ability to disassemble the internal units, which makes maintenance more convenient.
In general, one might think that the design of plate heat exchangers has a simple device, but this category of equipment also has its own characteristics.
First of all, these are the alloys from which the plates are made. It is very important to choose the right material for specific operating conditions. In addition, the features of the plate devices include the presence of seals, which also select for certain environments and temperatures.
DETAILS OF MICRO CHANNEL PLATE
The number of plates in micro channel plate always varies, that is, it can be different. Their total number compares with the parametric characteristics of the equipment, schemes and principles of its operation and future conditions of its operation.
Each plate locates inside the installation; specialized gaskets fix next to it. Their need comes on the fact that to create an isolation of flows that contains a coolant and other media.
THE ACTION OF THE SEALS
It is this category that does not allow mixing of media and creates a seal. Nowadays, only 2 classes of these elements are in widespread use: adhesive or clip-on.
COMBINATORICS OF ACTIONS
Current installations in one package can contain from 1 to several sets of plates. These same kits represent several collector circuits. By the mechanism of operation, the micro channel plate is divided into the following categories:
- Two-way
- Multi-circuit
- Single-circuit
Two-way models include special plates with a pair of plugged holes. These elements change the direction of flow of each agent to the opposite.
In installations of a single-circuit category, the circulation of the coolant itself carries out in only one direction.
Final words micro channel plate
The general view of the activity of units of this type presents so that the media can be directed towards each other. The heating sphere has a direction from the upper part to the lower branch pipe. The cooling flow makes the same revolution, just the opposite.
