Teappcm, is the pioneer manufacturer supplier of Phase Change Materials for Air condition and heating, Electronic cooling etc and various Related Chemicals in India USA etc. It has several associated manufacturing facilities spread across the globe. No other vendor in the world knows the subject better than us. The participating units have one or more of the certifications like ISO-9001-2008, ISO-22000, Halal & Kosher Cettification. We also have "REACH" Preregistration.
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PCM Phase Change Material PCM Electronic Chamber Cooling Air Condition ..
Freezer Salt: PCM used for maintaining the temperature at 0°C, you get it free; use tap water. Ask us for other target temperatures like -50°C, -25°C, -10°C, -16°C, -10°C, -4°C, +4°C, +7°C, +10°C, +15°C +30°C and so on.
Air Condition: Until very recently, pcms were not reliable enough to be used in air condition. We have developed pcm with almost infinite life and good performance in the human comfort range of 18C (64F) to 29C (84F) and further for electronic comfort at higher temperature. If your interest is in air condition then go to Phase Change Material Air Condition, Green House & Electronic Cooling.
Telecom Enclosure and Electronic Cooling: PCM or Phase Change Material widely used in Telecom Enclosures (BT Shelters) is LatestTM29T for Air-condition Back-up AC and LatestTM36S for Free Cooling. We also offer Polymer-based PCM-Filled Profiles Panels and Aluminum PCM-Filled Profiles or any other Container like Balls or Bottles or Heat Sinks and so on. We also provide engineering services for Back-up Cooling in Existing and New Telecom Shelters. If your interest is only in PCM for Electronic Cooling &
Telecom Shelter then go to our Page Telecom Shelters Phase Change Material and
A.C. Backup Phase Change Material.
Hot Pads and Solar Heating systems use our PCM LatestTM58, melting at 58°C.
Selected List of Hydrated Salt/Eutectic Phase Change Materials (PCMs) by Melting Point Temperature
Melting Point oC Latent Heat (L.H.) KJ/Kg & Specific Gravity Freezer Salt -58°F or -50°C 325 L.H in KJ/Kg & Sp.Gr. = 1.3 -09°F or -23°C 330 L.H in KJ/Kg & Sp.Gr .= 1.2 -03°F or -16°C 330 L.H in KJ/Kg & Sp.Gr. = 1.02 Ice 32°F or 00°C 335 L.H in KJ/Kg & Sp.Gr. = 1 Preservation 39°F or 04°C 105 L.H in KJ/Kg & Sp.Gr. = 1.4 45°F or 07°C 135 L.H in KJ/Kg & Sp.Gr. = 1.4 45°F or 07°C 300 L.H in KJ/Kg & Sp.Gr. = 1.4 Only know-how offered. 50°F or 10°C 170 L.H in KJ/Kg & Sp.Gr. = 1.4 59°F or 15°C 175 L.H in KJ/Kg & Sp.Gr. = 1.4 Air Condition - Electronics - Solar 65°F or 18°C 175 L.H in KJ/Kg & Sp.Gr. = 1.5 70°F or 21°C 175 L.H in KJ/Kg & Sp.Gr. = 1.5 75°F or 24°C 175 L.H in KJ/Kg & Sp.Gr. = 1.5 80°F or 27°C 175 L.H in KJ/Kg & Sp.Gr. = 1.5 84°F or 29°C 175 L.H in KJ/Kg & Sp.Gr. = 1.5 90°F or 32°C 210 L.H in KJ/Kg & Sp.Gr. = 1.4 97°F or 36°C 260 L.H in KJ/Kg & Sp.Gr. = 1.4 104°F or 40°C 220 L.H in KJ/Kg & Sp.Gr. = 1.4 113°F or 45°C 220 L.H in KJ/Kg & Sp.Gr. = 1.4 118°F or 48°C 220 L.H in KJ/Kg & Sp.Gr. = 1.4 136°F or 58°C 220 L.H in KJ/Kg & Sp.Gr. = 1.4 154°F or 68°C 220 L.H in KJ/Kg & Sp.Gr. = 1.8 158°F or 70°C 230 L.H in KJ/Kg & Sp.Gr. = 1.8 172°F or 78°C 240 L.H in KJ/Kg & Sp.Gr. = 1.8 192°F or 89°C 145 L.H in KJ/Kg & Sp.Gr. = 1.5-1.6 We have PCM & Heat-Treatment Salts upto 1100oC The Yellow Marked Products are running items and extensively used world wide.
TECHNO-COMMERCIAL STATEMENT OF PCM PRODUCT T-series Latest™
PCM Energy P. Ltd PCM Latest™ Product Latest™29T also any other grade like Latest™18T, Latest™20T, Latest™22T, Latest™25T Series T-series Latest™ Description Viscous Semi-Solid near Phase Change Temperature Appearance Translucent Base Material Inorganic Salts Phase Change Temperature 28°-30°C Sub Cooling 2°C max Specific Gravity 1.48-1.50 Latent Heat Practically 175 Joules/g Latent Heat Theoretical 188 Joules/g Spec. Heat 2 Joules/g°C Thermal Conductivity 1Watt/m °C Congruent Melting Yes Flammability No Hazardous No Thermal Stability > 10000 cycles Max. Operating Temperature 100°C Rates Available on request
T-series is the Latest in PCM technology, Generation-X. It is not degradable with time. It can be used in thicker layers greater than 1” (>25mm). This product has made the earlier PCMs obsolete.
For a Live-Site Trial of Back-up Air-conditioning with Thermal Salt Latest™29T visit our Bookmark on Live Site Trial in Telecom Shelters
Table of Cycle No. V/s Latent Heat & Sub Cooling for PCM Latest™29T
Cycle No. Latent Heat KJ/Kg & Sub-cooling in C 100 LH 196 KJ/Kg & Sub-cool 0.5C 200 LH 188 KJ/Kg & Sub-cool 1C 300 LH 188 KJ/Kg & Sub-cool 0.9C 400 LH 192 KJ/Kg & Subcool 0.8C 500 LH 185 KJ/Kg & Sub-cool 0.7C 1000 LH 178 KJ/Kg & Sub-cool 1C 1500 LH 172 KJ/Kg & Sub-cool 1.3C 2000 LH 175 KJ/Kg & Sub-cool 1.2C 2500 LH 178 KJ/Kg & Sub-cool 1.3C 3000 LH 170 KJ/Kg & Subcool 1.4C
The Error in measurement of Latent Heat can be up to 5% and The Thermometer Sensor can be off by 0.5°C
Phase Change Materials (PCMs) are "latent" thermal storage materials. They use chemical bonds to store and release heat. The thermal energy transfer occurs when a material changes from a solid to a liquid, or from a liquid to a solid form. This is called a change in state or "phase." Initially, these solid-liquid PCMs perform like conventional storage materials; their temperature rises as they absorb heat. Unlike conventional heat storage materials, when PCMs reach the temperature at which they change phase (their melting point), they absorb large amounts of heat without getting hotter. When the ambient temperature in the space around the material drops, the PCM solidifies, releasing its stored latent heat. PCMs absorb and emit heat while maintaining a nearly constant temperature. Within the human comfort and electronic-equipment tolerance range of 20°C to 36°C, latent thermal storage materials are very effective. The main applications for PCMs are when space restrictions limit larger thermal storage units in direct gain or sunspace passive solar systems. PCM may be used in Thermal Enclosures like Telecom Shelter Chambers BTS or BT Shelters or solar domestic hot water heating or passive solar space heating/cooling systems or in air-conditioning & refrigeration or cool-clothing.
Glauber's salt, Soda Ash, Sodium Acetate and paraffin wax are the most commonly used PCMs in solar heating systems. Although these compounds are fairly inexpensive, the packaging and processing necessary to get acceptable performance from them is complicated and costly. They are not offering a reliable pattern of releasing heat as the chemicals in these PCMs separate and stratify when in their liquid state. These PCMs have not always re-solidified properly. When temperatures dropped, they did not completely solidify, reducing their capacity to store latent heat. These problems have been addressed by packaging phase change materials in thin or shallow containers, and by adding clumping agents. Many salt hydrate PCMs have the disadvantage that during extraction of stored heat the material super-cools before freezing. This reduces the utility of the materials and if too severe, it can completely prevent heat recovery. They lose their heat storage property after some cycles. These types of Phase Change Materials, however, compare unfavorably with the newer generation of low-cost, highly efficient PCMs. Researchers now label these older compounds as "limited utility" Phase Change Materials PCMs. Phase Change Material perform best in containers that—when combined with the PCM—total one inch (25.4 millimeters). However, our T-Series Latest™ PCMs have defied this restriction. The packaging material should conduct heat well; and it should be durable enough to withstand frequent changes in the storage material's volume as phase changes occur. It should also restrict the passage of water through the walls, so the materials will not dry out. Packaging must also resist leakage and corrosion. Aluminum, steel and polyethylene are common packaging materials.
Thermal Salt Latest™29T
Our Thermal Salt Latest™29T is a mixture of several ingredients. Most of these items are manufactured by us or by our sister concerns. Its properties are as under:
Specific Gravity: 1.5
Freezing Point: 28°C
Melting Point: 29°C
Latent Heat of Fusion: 175 KJoule/Kg (40 K. Cal/Kg). 255 KJ/ltr (60000 KCal/Cu.m)
*Most manufacturers report the heat of fusion in a temperature range, like 20°C to 35°C. The specific heat of PCM in this range will get added to the values. For this temperature range
*Latent Heat of Fusion: 210 KJoule/Kg (50 K. Cal/Kg)
Shelf Life: Infinite
Max. Operating Temp.: 100oC
For a Live-Site Trial of Back-up Air-conditioning with Thermal Salt Latest™29T visit our Bookmark on Live Site Trial in Telecom Shelters
TECHNO-COMMERCIAL STATEMENT OF PCM PRODUCT S-SERIES LATEST™
PCM Energy P. Ltd. PCM Latest™ Product Latest™36S also other grades like Latest™32S, Latest™34S, Latest™48S Series S-series Latest™ Description Viscous Semi-Solid near Phase Change Temp. Appearance Cream or Gray Base Material Inorganic Salts Sub Cooling @ 1000 cycles Small Specific Gravity 1.45 Latent Heat Theoretical 260 Joules/g - Latent Heat Practical >200 Joules/g - >220 Joules/g - >230 Joules/g - >230 Joules/g Spec. Heat 2 Joules/g oC Thermal Conductivity 0.6Watt/m oC Congruent Melting Yes Flammability No Hazardous No Thermal Stability > 10000 cycles Max. Operating Temp. 100°C Rates Available on request
Latest TM 32S, Latest™ 34S, Latest™ 45S - 48S etc. salts are similar to Latest™ 36S.
Thermal Salt Latest™ 36S.
Our Thermal Salt Latest™36S is a mixture of several ingredients. Most of these items are manufactured by us or by our sister concerns. Its properties are as under:
Specific Gravity: 1.4
Melting Point: 36°C.
Latent Heat of Fusion: 250 KJoule/Kg (60 K. Cal/Kg) or 340 KJoule/liter (81000 KCal/Cu.m)
*Most manufacturers report the heat of fusion in a temperature range, like 20°C to 40°C. The specific heat of PCM in this range will get added to the values. For this temperature range.
*Latent Heat of Fusion: 300 KJoule/Kg (72 K. Cal/Kg).
Thermal Expansion: The coefficient of thermal expansion is the least offered in the industry. This eliminates cracking or shattering of containers and tubes.
Max. Operating Temp.: 100°C
Back-up Air-conditioning with Latest™29T Phase Change Material PCM
Power Failure is very common in developing countries. Most BT Shelters or Telecom Enclosures are equipped with electronic Equipments and Battery for emitting proper signal to the cell-phone users. When the power fails, the temperature inside the BTS start rising very rapidly due to heat generated by the equipments and also due to ambient conditions. Diesel Generators are provided to give back up. However they are largely depended on the alertness of the watchman cum operator at the site. The contractors often delay in sending diesel aggravating the problem. To minimize the dependence on generators, Back-up air-conditioning may be provided by phase change material. Latest™ 29T is used in India for giving back-up Air-conditioning. 240kg of Phase Change Material Latest™29T is generally used per BTS. 240kg*175 KJ/kg = 42000 K. Joules of backup. This is equal to 42000/3600 = 11.6 KWH of energy (Theoretical L. H. value of Latest™29T is 188J/Kg giving theoretical back-up of 12.5KWH). We can give you False Ceiling "Day-Night" temperature balancer. We can also give Modular Heat Exchanger for "Day-Night" temperature balancing.
Latest 25™T, Latest 20™T, Latest 18™T salts are similar to Latest 29™T. Phase Change Materials perform best in containers that—when combined with the PCM—total one inch (25.4 millimeters). However, our T-Series Latest™ PCMs have defied this restriction. T-series is the Latest in PCM technology, Generation-X. It is not degradable with time. It can be used in thicker layers greater than 1” (> 25mm). This product has made the earlier PCMs obsolete.
For maintaining a Green House at 16°C Click visit our book-mark at #GreenHouse
For Day-Night Temperature Balancing at 24°C (Free AC) click on #DayNightAC
Free Cooling for BT Shelters (Telecom Shelter)
Ahmedabad Mean Temperature°C Month Minimum -- Maximum January 11.7°C- -- 28.4°C February 13.8°C- -- 31.3°C March 18.8°C- -- 36°C April 23.4°C- -- 39.9 May 26.2°C- -- 41.8°C June 27.0°C- -- 38.4°C July 25.7°C- -- 33.3°C August 24.8°C- -- 31.9°C September 24.1°C- -- 33.4°C October 20.9°C- -- 35.8°C November 16.5°C- -- 33.2°C December 13.0°C- -- 29.8°C
The above details are the mean maximum and minimum temperatures in various cities. The above information is available from World Weather Information Service, India Meteorological Department. A close scrutiny shows that the mean monthly maximum temperature in India, in the hinterland can be 43°C and a peak time maximum temperature in India, in the hinterland can be 45°C with an occasional shoot-up to 50°C. The corresponding minimum temperature can be 27°C on that day. A Phase Change Material of 36°C is ideally suited for such a climate and for a BT Shelter that is targeting a maximum temperature of 40°C inside the shelter.
The worst day in the year may have a temperature profile in a day as under:
40 to 45°C+ for 4hours 36 to 40°C for 8 hours 27 to 36°C for 12 hours
The temperature pattern in the BT Shelter can be as under:
No. of Hours in a day Ambient Temp.°C - Shelter Temp. w/o PCM - Shelter Temp. with 36°C PCM - Energy Load in KWH 04 40-45+°C ###### - 50-55°C ############# - 38-40°C ################### - 5KWH Discharging 08 36-40°C ####### - 46-50°C ############# - 36-38°C ################### - 5KWH Discharging 12 27-36°C ####### - 37-46°C ############# - 27-36°C ################### - Charging PCM.
The PCM of Melting Point 36°C is well suited for the job. Depending on the size of BTS and ambient conditions, the Energy load will vary.
The PCM of Melting Point 36°C is well suited for the job. Ideally we must have enough PCM to take care of uncertainties. For a big Shelter, we propose to have 100 kg of PCM of >200 Kilo Joules/kg which means 20000 KJ for the system. We can have profiles of PCM filled panels on a rack. This will store 20000 KJ for the system. 20000 KJ means 20000/3600 = 5.55 KWH. For a small Site 50Kg of material will be enough. This presentation is made for starting an interaction with user. The user may evaluate, amend and interact with us. Please check our write-up on LatestTM 36S. Depending upon the need one can select, Latest 25™S, Latest 30™S, Latest 45™S salts that are similar to Latest 36™S
Depending upon the need one can select, Latest™ 32S, Latest™ 34S, Latest™ 36S salts that are similar to Latest™ 36S. Phase Change Materials perform best in containers that—when combined with the PCM—total one inch (25.4 millimeters). However, our S-Series Latest™ PCMs have defied this restriction. S-series is the Latest in PCM technology, Generation-X. It is not degradable with time. It can be used in thicker layers greater than 1” (> 25mm). This product has made the earlier PCMs obsolete.
Pl Click to enlarge
---------- PCM filled Panels -------------------------------------- PCM filled Pipes
Aluminum Bottles --- HDPE Balls ------ SS Balls in diff. sizes ------- Jacket ----
Hermetically Sealed Profile of Any Size Like 16mm*160mm*1000mm OR 20mm*200mm*850mm or …..etc, offered in Polymer or Aluminum filled with desired Grade of PCM. We can give PCMs in Aluminum or Pet Bottles, HDPE or SS Balls or in Aluminum Sinks or in any container as per your choice
Cold Storage, Shipping and Sundry Application:
Several Types of Packing can be custom made for cold storage and shipping application. Insulated Containers having back up of PCM of appropriate temperature (like -40oC or say +18oC) can be offered. As a demonstration, we have shown below a small size "PCM backed Insulated Container". It has four PCM filled profiles inserted in a special high-class insulated box. The box was kept for 30 days at 18oC by filling it with appropriate PCM. Containers of any size and shape can be tailor made.
Phase Change Material PCM Filled Insulated Boxes for Transport of Medicine, Food, Live Culture, Human Organs etc. are available in several sizes.
General Products -- Phase Change Material Air Condition, Green House & Electronic Cooling --
A.C. Backup Phase Change Material -- Encapsulation Method of PCM -- Telecom Shelters Phase Change Material -- FAQ
PCM Phase Change Material Manufacturers:
TEL: 91-22-23770100, 23774610, 23723564. FAX: 91-22-23728264.
Copyright and Usual Disclaimer is Applicable.
Last updated: 21 June, 2015.
PCM filled Panels -------------------------------------- PCM filled SS Ball ---------- Jacket
Neatly Packed PCM Profiles in BTS Telecom Shelter
Natural Air-conditioning with PCM in Roof
PCM Phase Change Material Cooled AC Air Conditioning done in Netherlands
Stackable HDPE Heat Exchange Panels.
We are exporters to USA, Canada, UAE, Europe, South Africa, Tanzania, Kenya, Nigeria, Egypt, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Sweden, Finland, Norway, Netherlands, Denmark Greenland, Norway, UK, Ireland, Germany, Belgium, Switzerland, Czech Rep., Slovakia, Scotland, Poland, Belarus, Germany, Austria, France, Ukraine, Australia, Spain, Italy etc.
They who love thee on this earth, keep calling on thee and chanting thy beads
Lest thou forgetest.
They assign the credit of their hard work to your blessings
They keep you amused.
They come to thy temple with baskets of fruits, as if you were a glutton
They deny the same to their children.
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They hardly understand the meaning of it.
They bring gold and diamonds. They come with beating of drums
They love to advertise their offerings.
They offer you a small bribe as advance for booty, called lottery
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I do not bargain for booty
Your promise of the heaven does not lure me
Your hell-fire does not scare me
I do not even know the proper method of prayer
I do not offer any thing to you
Ages have gone by and I have not seen you my lord
Yet my love for you keeps waiting for you