Fluid reservoir
• The fluid reservoirs ensure compensation for varying refrigerant volume in the cooling and air conditioning. • These volume variations are due to variations generated by differences in operating temperatures in different seasons and opening and closing sequences of the expansion valve or the filling of the refrigerant evaporator. • Deposits also can store liquid refrigerant gas installation, for maintenance or repair


Expansion valves



The expansion valve is a type of expansion device (an element of compression refrigeration equipment) in which the expansion is controlled manually or automatically.
TYPES[
Manual; in which the adjustment is made by a screw. In this type of valve overheating it does not depend on the evaporation temperature of the refrigerant in its gaseous state, but is fixed.
Thermostatic; called VET or TXV, which acts through an expansion element controlled by a sensor bulb, which regulates the flow of coolant through hole TEV
Thermostatic with external pressure compensation; VETX called, is a derivation of VET for medium to large teams or work presionesy high thermal load variations. Furthermore they must be used in systems where the evaporator has several circuits and / or is coupled to a refrigerant distributor.
Electronic or electromechanical (motorized); It works by an electronic control, in which temperature sensors send signals to an IC (integrated circuit) and this means that data kept overheating within the allowable parameters for the operation. (It is mainly used in pond pumping)
Automatic; which maintains a constant pressure in the evaporator flooded feeding a greater or fewer flow evaporator surface in response to changes in heat load are taken therein.



ACCESSORY BYPASS

The term "bypass valve" refers to any valve installed in a bypass line, and is used to indicate a particular shape or configuration. So, types of valves are suitable for installation in bypass pipes?
THE ROLE OF BYPASS VALVE

When considering which types of valves are indicated for each installation in bypass pipes, you need to think about the role of the bypass line. What was the purpose of installing the bypass line in particular pipes ?, bypass could be divided into two categories.
The bypass pipe which acts as a backup line to allow the operation to continue as damaged as pressure-reducing valves and steam traps are isolated and equipment stops during repair or replacement
Bypass line whose purpose is to supplement Elo performance pressure-reducing valves and steam traps
These different objectives require valves with different characteristics. Therefore, the optimum valve models are different.
VALVES SUITABLE FOR USE AS bypass valves

Example: Online Support Team Uses Replacement

The role of a steam pipe for use as a support line for replacement of equipment is not always limited only to permit passage of fluid to continue flowing. There are cases which must also act as a replacement for any pressure regulating valve or steam trap involved, so it is important that the bypass line has some ability to "control fluid" in these cases, globe valves the right kind of sun valve.
Example: bypass line to supplement the team's performance.

The bypass line installed to supplement the equipment is designed to handle the pressure or flow, and a valve so frequently with low resistance is used in the fully open position. Also, if a control valve is included in the installation, the valve requires a rapid response of opening / closing. In this application, a ball valve is suitable valve type.
The topic about the types of valves shown in Types of Valves and Their Applications.
TRAPS WITH INTEGRATED BYPASS VALVE

A model steam trap having an integrated bypass valve.
To use this trap, to start open the bypass valve for rapid condensate discharge starter. Subsequently during normal operation, leave the bypass valve closed so the condensate is discharged only beams of the trap. However, keep in mind that because the bypass valve is integrated into the trap, it can not perform the bypass function when the trap is in the process or is replaced. To our knowledge, no pressure reducing valves or control feature of the integrated bypass valve. The latter should be used in combination with the appropriate valve.

  

VALVE VET


A thermostatic expansion valve (often abbreviated as VET or TX valve) is a device expansiónel which is a key component in refrigeration and air conditioning, which has the capacity of generating the pressure drop required between condenser and the evaporator in the system. Basically your mission, teams directly (or dry) expansion is restricted to two functions: to control the flow of liquid refrigerant entering the evaporator and to hold a constant output of this overheat. To perform this task has unbulbo temperature sensor which is responsible for closing or opening the valve so as to decrease or increase the refrigerant entering and its consequent evaporation within the evaporator, which implies a varying environment temperature respectively.

This device improves the efficiency of refrigeration and air conditioning, and regulating the mass flow of refrigerant according to the thermal load. The refrigerant enters the direct expansion evaporator does state liquid / vapor mixture as the exit of the valve a sharp drop in pressure produced by the "direct expansion" coolant occurs, which causes a partial change fluid state to the evaporator inlet. This phenomenon occurred in valves is known as flash-gas