A GEOTHERMAL HEAT PUMP Geothermal heat pump consists of

A hybrid system has use in various different andcombination of geothermal resources with outdoor air is known as cooling tower.

Hybrid ways are particularly compare with cooling it will uses much larger areafor heating purpose. In this variation of an open-loop system, one or more deepvertical wells are drilled. Water is drawn from the bottom of a standing columnand returned to the top. During periods of peak heating and cooling, the systemcan bleed a portion of the return water rather than reinjection it all, causingwater inflow to the column from the surrounding aquifer. The bleed cycle coolsthe column during heat rejection, heats it during heat extraction, and reducesthe required bore depth.   COMPONENTSOF GEOTHERMAL HEAT PUMPGeothermal heat pump consists of several componentsheat exchanger, air delivery system and heat pump units with the help of thesecomponents the GHP is work in proper manner.

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In here explain each component andparts which are all used in this component.HEATEXCHANGER   In geothermal heat pump system the heat exchanger isburied in to the ground and has different ways. Heat exchanger is a devicewhich transfers heat from one area to a solid object to another medium. The exchangerhas three types shell and tube type, plate type and air cooled type.

In geothermalheat pump system is used shell and tube type heat exchanger. The exchanger isdesigned by primary circuit fluid type which operation is transfer the hotfluid is named as temperature and flow rate in this circuit mainly want totakes out the heat and outlet temperature. In another one is secondary circuitfluid type in this type have similar operation of primary circuit but functionis different it will acts as coolant like cool the fluid. The heat exchangerwhich is used in geothermal heat pump system has good life span.  REFRIGERANTRefrigerant is one of the main components for heatpump acts as the mixture; it has working as a thermodynamic cycle and behavesas the heat vehicle exchanger between hot and cold spotlights. In here there isno cycle of steam compression or coolants undergo in this phase changes of currentheat exchange and due to the environmental restrictions imposed on therefrigerant. The fluid refrigerators contain chlorine like CFC chlorofluorocarbonand HCFC hydro chlorofluorocarbon in additional have pure substances of mixtureof halogenated compounds. After the mixture can be change into azeotrope behavespure substance similar to chemical or zeotropics.

The zeotropic mixtures haveoutstanding performance with respect to pure refrigerants.The most used refrigerant in geothermal heat pumpsystems are,FREON410A REFRIGERANTR410A is a hydro fluorocarbon combination it issuitable for average and low type refrigeration temperature application. R410Ais composes of R32 and R125 in equal range of atmospheric pressure.

The boilingpoint of this refrigerant is -52.7 degree Celsius and its glide is 0.1 degree Celsius.The main advantage is not toxic and it will not easily flame. R410A is thesubstitute for R22. Application for R410A is used in new residential andcommercial air conditioning areas. The main benefits is using this refrigeranthas more than 60% of greater capacity than R22.

FREON407C REFRIGERANTR407C is a mixture of non ozone depleting HFCrefrigerant. For installing and designing this type of refrigerants is perfectfor low and medium level refrigeration temperature systems. It is the combinationof R32, R125 and R134A. The boiling point of this type is -43.

4 degree Celsius andglide is 7.4 degree Celsius. It has similar advantage of R410A like non toxicand inflammable. Refrigerant have A1 safety classification and replaced by therefrigerant Freon 22. Maximum this type is uses in domestic purpose and highpower heat pumps. FREON 134A REFRIGERANTR134A is a pure substance mixture of tetrafluoroethaneCH2FCF3 composition is one type of HFC refrigerant. Now it analysis of damageeffect gives to ozone layers by chlorofluorocarbons and hydro chlorofluorocarbonsrefrigerants. Nowadays this refrigerant is replaced as R12 used in CFCrefrigerant.

The mainly used areas are centrifugal compressors, rotary screwcompressor and reciprocating compressor. The atmospheric pressure of boiling pointis -26.3 degree Celsius. This refrigerant also has non toxicity andinflammable, additional has non corrosive.FREON717 REFRIGERANTSR717 is the ammonia refrigerant it has the very low boilingpoint is 33.3 degree Celsius and favored due to highly efficient energyrefrigerant, it has low flammable but it is highly toxic because of ammonia.R717 has zero ozone depletion potential and even have zero global warmingpotential.

The common application of R717 is used in industries, transportrefrigeration, industrial and commercial centrifugal compressors, even in airconditioning chillers.HEATPUMP UNITSPreviously has explained about the heat pumpfunction in the introduction part. In here go to see about the each heat pumpparts and their functions. Heat pump consists of a lot of process condenser,evaporator, compressor, expansion valves etc.  CONDENSERCondenser is trends to heat transfer device orsystem to convert from gas to liquid state due to cooling the condenser. It hasmanufactured by different size and shape depends upon the area of usage like ifcondenser is small it has uses in domestic purpose and large in size means usesin large scale areas in industries. Condenser cabinet consists of coil, compressorand various controls, compressor is the heart for the condenser system its actsas to compress the cooled air and pump it to coil in the formation of hot gas.EVAPORATORIn this evaporator system has opposite processcompare to condenser this device is used to convert liquid medium to gaseousmedium like liquid is evaporates into a gas form and then gases are transfer orsupply to the compressor.

How the water convert into gas with the help of heatcontaining in atmospheric air.COMPRESSORCompressor is uses in several types of areas or fieldhelp to compress the low pressure air to gives high pressure air, it acts as mechanicaloperating process to compress the gas which is comes from evaporator and delivershigh temperature gas to condenser by reducing the volume size and has a differenttypes of compressor are mostly used in HVAC industries.EXPANSIONVALVEThe expansion valve is one of the components of heatpump system. The process of this valve is to transfer the water from condenserto evaporator to control the amount of heat released from the evaporator bymeans of superheat. Expansion valve is also known as thermal expansion valveshort form is TEV, TXV valve and it acts as metering device.

 AIR DELIVERY SYSTEM (DUCT)Air delivery system is also known as duct or ductflow, it is uses to deliver or transferring the air from outside to inside, orinside to outside like exhausting and inhaling the air. In here the air whichis released from this system is used to deliver out or something it will actsas opposite operation inhale the air from atmosphere. Maximum duct is used invarious areas in commercials buildings, industries and even uses in small scalepurpose. The duct has consists many components and for using this duct forgeothermal system want to design the system in large size and compressor speed.Sometimes compressor speed is variable run the system at low and output fanalso operate slow in most of the time.

Everywhere using the duct, all the timethe important needs for good operation are duct should manufacture large insize, has lower velocity so these gives the result in lower airflow resistancebuts these needs are only applicable for all the residential duct comfortsystem.