Refrigerant pipe sizing software free download refrigerant. Dhex is a software tool that is made to demonstrate the chemical design calculations of double pipe hairpin heat exchangers. Such as the old asrhae rp 185 book and refrigerant line sizing r22. This may be as small as 58 example service meat cases, or as large as 8 example multishelf ice cream cases. Toxic gases can be produced in fires involving this material. Since the refrigerant is in a gaseous state in the suction line, it does not mix well with the refrigerant oil.
This is a simple, yet powerful little application for sizing refrigerant piping for many different refrigerants. After my last post, i received this comment from bruce porter senior manager of field service for upg johnson controls. Check with the compressor manufacturer for any recommendations they may. Refrigerant piping design carrier commercial systems north. It is an ideal retrofit solution for many existing r404a systems, offering a substantially lower carbon footprint due to its lower gwp, and improved energy efficiency. Saravel refrigerant pipe sizing program designed by saravel corp. Zf refrigeration scroll compressors using r407a, r407f, r448a or r449a in low. Of the major sections of pipe, the suction line is the most critical to size properly. It is recommended that pipe sizing be checked to determine that pressure drops and velocities would be acceptable with the new refrigerant.
Sorry to see that you are blocking ads on the engineering toolbox. Refrigerant pipe sizing pdf this application guide was created for design engineers and service technicians to demonstrate how to size refrigerant piping. Common applications include supermarket refrigeration, refrigerated transports, and food processing. If the mbh load placed on the suction line is less than the number listed under suct riser, reduce riser by one line size. It is shipped as a liquid under its own vapor pressure. When outdoor unit is located above indoor unit, use table 15. Split system refrigerant piping guide r410a refrigerant subject to change without notice. R22, r4a, r404a, r407a, r407c, r407f, r410a, r448a, r449a, r450a, r454c, r455a, r507a, r5a, r744 co2, r1234yf, r1234ze. Problem a simple sizing chart is needed for use by installation and service technicians and system designers.
Basic air conditioning piping recommendations suction. A system is installed with 200 equivalent ft of line set. Line sizes are calculated at rated full load system capacity. Maximum equivalent line length in feet 25 50 75 100 150 18,000 1. Results from bitzer calculation software, version 6. R407a was developed as a close match to r22s capacities and flow rates, making it well suited as an energy efficient retrofit for r22 in medium and low temperature refrigeration systems for supermarket. For compressors with an access port, the same handoperated pump can be used to remove lubricant without removing the compressor from the system. Liquid line open this chart hot gas line open this chart table 1 open this chart for more information about water chiller refrigerant line sizing for remote aircooled condensers call the advantage sales department at 3178870729. Bryan started hvac school to be free training hvacr across many mediums, for techs, by techs. Incorrectly sizing the suction line can lead to oil return problems or a reduction in the systems capacity. Cc072603 1012 0515 e refrigerant changeover from hfc. A well laid out software is available for refrigeration pipe sizing from solvay fluor gmbh, hannover, germany.
For sizing subcooler for different conditions the first step is to establish the load. Temperature and pressure chart for refrigerants r22, r410a, r12, r4a, r401a, r409a, r502, r404a, r507a, r408a and r402a. The oilrefrigerant calculations have been carried out using new data for the solubility of klea 407a. Gasco r407a 105esr407a 901 ppm refrigerant r125 pentafluoroethane, 1039 ppm refrigerant r32 difluoromethane, 1060 ppm refrigerant r4a tetrafloroethane, balance nitrogen contained 105 cylinder with a c10 connection.
International journal of refrigeration sciencedirect. The line sizes given on the specification sheets are based on a 5 pound pressure drop for the entire piping run, from 50 to 250. Refrigerant pipe sizes in a typical supermarket system consist of the compressor discharge, condenser return, and individual circuit liquid and suction pipes. The correct pipe sizes help to ensure proper oil return and low pressure drop. Pressure drop across a refrigerant distributor if used. All selections are based on a maximum of 65f return gas entering the compressor and a refrigerant condensing and liquid line temperature of 105f. R407a, r407f, r448a and r449a have other density and mass flow than r404a r507. The refrigerant piping design program will select pipe size based on a specified maximum pressure drop in the line and compute minimum required capacity for oil entrainment in risers. Aug 29, 2001 incorrectly sizing the suction line can lead to oil return problems or a reduction in the systems capacity. Forane 407a is a lower gwp refrigerant, designed for the replacement of r404a and r507a retrofit and new equipment in medium and low temperature refrigeration. For use on refrigeration andor air conditioning systems only bulletin 2010, november 1999 supersedes bulletin 2010, june 1975 and all prior publications. The design of refrigerant piping systems involves capacity. Saturation pressuretemperature data for r407a psig pressure pressure pressure pressure.
For split systems, interconnecting refrigerant lines should be. Applications department recommendations are listed on the system summary sheet furnished if requested with the job. The program contains data for three common refrigerants r22, r4a, and r717 permitting comfort cooling as well as low temperature applications to be examined. Small handoperated pumps are available which permit insertion of a tube into the compressor suction line. Suction line 2f, 750 fpm horizontal, 1500 fpm suction riser, 4000 fpm pitched 12 per 100 ft. Okay hopefully ive made my point that the two factors suction line pressure loss and suction line velocity are the most important parts of sizing suction lines for any air conditioning system either residential of commercial. Horizontal suction lines should slope 12 per 10 toward the compressor to aid in good oil. I need charts for piping sizing for r407 you are all over the board and you must be blindeek. It is essential that blend refrigerants, like r407a, r407f, r448a and r449a be. The discharge gas line runs from the discharge side of the compressor to the inlet of the condenser. Line sizing every splitsystem unit is shippe d with a factorymounted sweat fitting. Refrigeration line sizer for r404a, english units 73. Generally, the suction line is sized for a minimum pressure drop through the line and a minimum velocity in order to ensure good oil return to the compressor.
Jun 19, 20 this chart is a rule of thumb for sizing and the key is to keep the percentage loss as low as possible and still maintain over fpm in the entire line set. Revised 61699 r12, r22, r502, r4a, and r404a commercial refrigeration page 3 of 6. Web basedruns through your browser select air coolers based on design requirements and let the software pick the unit that meets your most. F ft btuh, f ft ton, c m btuh, c m ton, c m w, c m kw. If the pipe chosen is too large, the velocity of the refrigerant flow will be reduced. R407a, r407f, r448a and r449a have other density and mass flow than r404ar507. Once it receives focus, use the arrow keys on the keyboard to move and position the product image.
Genetron performaxtm lt, r407f thermodynamic properties. Basic air conditioning piping recommendations suction lines. See documented operating envelopes in the compressor technical data select software. In the select software the value of the liquid temperature tlo is provided along with. A theoretical vapor compression cycle analysis has been done using the recent refrigerant property data. It is a zeotropic blend of difluoromethane hfc32, pentafluoroethane hfc125 and 1,1,1,2tetrafluoroethane hfc4a. R407a is a mixture of gasses used as a refrigerant. When sizing the heating piston for installations where the outdoor unit is below the indoor unit, use table 12. Incorrectly sizing the suction line can lead to oil return problems or a reduction in the systems.
February, 2015, comparing solstice n40 r 448a with r449a as well as other r404a replacements, are shown below. The hot gas bypass line on the circuit runs from the discharge line of the compressor to the liquid line connection at the evaporator. Cooling calculator for cold rooms, selection and calculation of cooling units, condensing units, evaporating units. Static pressure loss gain due to the vertical lift drop of the liquid line. Checking pipe sizing will confirm that capacity and efficient oil return are not being negatively affected. Suction line 700 to 4000 fpm discharge line 500 to 3500 fpm condenser drain line. The zoom feature provides no benefit to users who are blind. Suction lines use table 3 through table 6 to properly size suction lines. Future updates are planned to include alternate liquid line sizing for heat pump applications. Both refrigerants are compared at the conditions of the middle evaporating temperature of. Split system refrigerant piping guide united coolair. R407a, r407f, r448a, r449a have other pipe sizing be checked to determine that pr refrigerant. The vapors are heavier than air and can cause asphyxiation. Line sizes are expressed in outside diameter of type l copper tubing.
Zeotropic blend designed to serve as a replacement for r404a in supermarket refrigeration retrofits or new systems. Refrigerant line sizes for remote systems revised 6. The software will do all the thermal calculations involved in the design and will generate a summary of all resultsetc. Table of contents 2018 ashrae handbookrefrigeration. Gasco 103lr407a r407a calibration gas in a 103 liter cylinder connection c10. Sporlan thermostatic expansion valves for use on refrigeration andor air conditioning systems only bulletin 1010, april 2011 supersedes bulletin 1010, october 2009 and all prior publications. Excellent lowgwp, highly energy efficient and nonflammable refrigerant for low and medium temperature in commercial refrigeration. This calculator uses the wolf and pate 2002 correlation.
Pressure drop across liquid line accessories such as a solenoid valve and filterdrier. Forane 407a r407a is a nonozone depleting, zeotropic blend of hfc refrigerants r32, r125, and r4a. F liquid vapor c f liquid vapor c f liquid vapor c f liquid vapor c49 0. Older r22 systems may contain a mineral or alkyl benzene based lubricant that is not compatible with hfcs like r407f. R407f is a hfc refrigerant and a poe lubricant will be required. This sofware and its documentation is only available for online use by the users. Also, refer to the line sizing charts in these instructions. Figure 4 indoor chiller with remote aircooled condenser liquid line riser discharge line chiller tx valve sight glass. A well laid out software is available for refrigeration pipe sizing from solvay fluor gmbh. Common applications include supermarket refrigeration, refrigerated transports, and food. The content of this software aswell as all the included documentation is protected by and owned by calcooling andor our suppliers, customers or collaborators. It is strictly forbiden to copy this software in any other server or internet location. Thermostatic expansion valves with selective thermostatic charges april 2011 bulletin 1010.
Refrigerant piping design carrier commercial systems. From the 1947 launch of the catchall, the worlds first molded core filterdrier, to todays intricate electronic valve and controller packages, for over 80 years sporlan has set the industry standard for the development and manufacture of leading edge hvacr components. Liquid line sizing for heat pumps is currently limited to 38. Forane 404a, r404a, pressure temperature chart, pt chart, hvac, refrigeration, air conditioning, refrigerant gas created date. Refrigerant line sizes for remote systems revised 61699. The program eliminates all the tedious calculations necessary when piping is sized manually and automatically corrects for all system operating conditions. In keeping with industry standards, the refrigerant piping design program calculations are based on procedures outlined in the ashrae refrigeration handbook. Suction line sizing the line sizing charts on each case specification sheet can be used to size the subfeed branch lines. Zf scroll refrigeration compressors with r407af, r448a, r449a. R407a, r407f, r448a, r449a are blend include bubble and dew point data. The liquid line connects the outlet of the condenser to a tx valve at the evaporator. For split systems, interconnecting refrigerant lines should be sized to match the factory supplied fittings unless the application dictates different line sizes due to pressure drop.
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