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PCM Energy P. Ltd
Customized PCMs
We have several Associated Units
ISO-9001-2008 Certificate
"REACH" Pre-registered
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General Products - AC Backup Phase Change Material - Encapsulation Method of PCM Phase Change Material Manufacturers
Telecom Shelters Phase Change Material - Doctor Says - Phase Change Material Air Conditioner at 21C or 29C
PCM Phase Change Material Manufacturers
T-series 18Cto29C: Phase Change Material, PCM Latest TM Brand with Melting Point 29°C and Latent Heat of fusion 170 KJoule/Kg or 255 KJoule/liter. It is best suited for Air-Condition Back-up to BT Shelter or Telecom Shelter. Other M.P. grades are summarized in the link.
S-series 32Cto45C: PCM Latest TM Brand with Melting Point 36°C and Latent Heat of fusion 260 KJoule/Kg or 357 KJoule/liter. It is best suited for Air-Cooled Outdoor BTS and Electronic Cooling. Other grades are summarized in the link.
Hot Pads and Solar Heating systems use our PCM LatestTM58, melting at 58°C.
Telecom Enclosure: PCM or Phase Change Material widely used in Telecom Enclosures (BT Shelters) is LatestTM29T for Air-condition Back-up and LatestTM36S for Free Cooling. We also Offer Polymer-based PCM-Filled Profiles Panels and Aluminum PCM-Filled Profiles or any other Containers like Balls or Bottles or Heat Sinks or Jackets. We also supply Telecom Shelters and provide engineering services for Back-up Cooling in Existing and New Shelters. If your interest is only in PCMs for Telecom Shelter then go to our page at PCMs for Telecom Shelters For Encapsulation Methods like Profiles Balls, Pouches, Bottles, Heat Sink, False Ceiling, Walls Paneling, Cool Furniture etc. Go to our Page Phase Change Material Encapsulation Methods.
Freezer Salt: PCM used for maintaining the temperature at 0°C, you get it free; use tap water. Ask us for other target temperatures like4°C, 7°C, 10°C, 15°C, Minus 5°C, Minus 30°C and so on.
We cannot help making a negative comment on the products offered by other brands. Most of the brands are offering Thermal Salt 29 that freezes at less than 18oC, making them practically useless in tropical regions. The shelf life of some of the vendors is hardly 45-60 day, making its use by long distance importers almost impractical. Most of such vendors are not manufacturer of the major ingredients but only compounders. Often, they are one-man-show manufacturers and quote fancy prices for the product. With the information technology to their aid, they make fancy web sites and manage to squeeze the buyers. We have six manufacturing units, owned and managed by family members and most of the ingredients are manufactured by us.
TECHNO-COMMERCIAL STATEMENT OF PCM PRODUCT PHASE CHANGE MATERIAL T-SERIES LATEST™
| PCM Energy P. Ltd | PCM Latest™ | PCM Latest™ | PCM Latest™ | PCM Latest™ |
| Product | Latest™29T | Latest™25T | Latest™20T | Latest™18T |
| Series | T-series Latest™ | |||
| Description | Viscous Semi-Solid near Phase Change Temperature | |||
| Appearance | Translucent | |||
| Base Material | Inorganic Salts | |||
| Phase Change Temperature | 28-30oC | 24-26oC | 19-20oC | 17-19oC |
| Sub Cooling | 2oC max | 2oC max | 2oC max | 2oC max |
| Specific Gravity | 1.48-1.50 | 1.48-1.50 | 1.48-1.50 | 1.48-1.50 |
| Latent Heat Practically | 175 Joules/g | 175 Joules/g | 175 Joules/g | 175 Joules/g |
| Latent Heat Theoretical | 188 Joules/g | 188 Joules/g | 188 Joules/g | 188 Joules/g |
| Spec. Heat | 2 Joules/g oC | 2 Joules/g oC | 2 Joules/g oC | 2 Joules/g oC |
| Thermal Conductivity | 1Watt/m oC | 1Watt/m oC | 1Watt/m oC | 1Watt/m oC |
| Congruent Melting | Yes | Yes | Yes | Yes |
| Flammability | No | No | No | No |
| Hazardous | No | No | No | No |
| Thermal Stability | > 10000 cycles | > 10000 cycles | > 10000 cycles | > 10000 cycles |
| Max. Operating Temperature | 100oC | 100oC | 100oC | 100oC |
| 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. Latest™ 25T, Latest™ 20T, Latest™ 18T salts are similar to Latest™ 29T.
Table of Cycle No. V/s Latent Heat & Sub Cooling for PCM Latest™29T
| Cycle No. | 100 | 200 | 300 | 400 | 500 | 1000 | 1000 | 1500 | 2000 | 1500 | 2000 | 2500 | 3000 | |
| Latent Heat KJ/Kg | 196 | 188 | 188 | 192 | 185 | 178 | 178 | 175 | 170 | 172 | 175 | 178 | 170 | |
| Sub Cooling oC | 0.5 | 1.0 | 0.9 | 0.8 | 0.7 | 1.0 | 1.0 | 1.1 | 1.2 | 1.3 | 1.2 | 1.3 | 1.4 |
Error in measurement of Latent Heat can be <5% and Thermometer Sensor can be off by 0.5oC
Phase Change Materials (PCMs) or Thermal Salts 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. This is called a change in state or "phase." Initially, these solid-liquid Thermal Salts perform like conventional storage materials; their temperature rises as they absorb solar 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 PCM material drops, it 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 35°C, latent thermal storage materials are very effective. The main applications for Thermal Salts are when space restrictions limit larger thermal storage units in direct gain or sunspace passive solar systems. PCMs may be used in Thermal Enclosures like Telecom Chambers BTS or BT Shelters or solar domestic hot water heating or passive solar space heating/cooling systems.
Glauber's salt, Soda Ash, Sodium acetate and paraffin wax are the most commonly used PCMs or Thermal Salts 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 Thermal Salts 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 thickening and 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 PCMs, however, compare unfavorably with the newer generation of low-cost, highly efficient PCMs. Researchers now label these older compounds as "limited utility" PCMs. Phase Change Materials perform best in containers that have a depth of 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: 28oC
Melting Point: 29oC
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 20oC to 35oC. 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
210 Kg of Latest29T PCM (10KWH) filled profiles were installed in an Existing Telecom Shelter of 2m Length by 2.5m width by 2.7m Height. Five thermometers were installed to measure temperature at various points. The Air-condition was switched off when the temperature was 17.3oC. Ambient temperature was also measured. The battery voltage was observed as per the instruction of the site-officer. The permissible maximum temperature that can be reached was targeted to 36oC. This temperature was not reached in 6 Hours of the run. In a blank reading without Latest29T PCM the target maximum temperature crossed in less than 1 hour.
For a Live-Site Trial of Air condition Back-up click Phase Change Material for AC Back up in telecom Shelter
For maintaining a Green House at 16C click Green House Cooling
For Day-Night Temperature Balancing at 24C (Free AC) click Day & Night Temperature Balancing with PCM
Free Cooling for BT Shelters (Telecom Shelter)
Weather Information
Month |
Ahmedabad |
Bhopal |
Hyderabad |
Jaipur |
Lucknow |
Nagpur |
New Delhi |
|||||||
|
Mean Temp.C |
Mean Temp.C |
Mean Temp.C |
Mean Temp.C |
Mean Temp.C |
Mean Temp.C |
Mean Temp.C |
|||||||
|
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Jan |
11.7 |
28.4 |
10.2 |
25. |
14.7 |
28.6 |
7.8 |
22.5 |
6.9 |
22.6 |
12.4 |
28.6 |
7.3 |
21.1 |
Feb |
13.8 |
31.3 |
12.4 |
28.6 |
17.0 |
31.8 |
10.7 |
25.7 |
9.3 |
26.0 |
15.0 |
32.1 |
10.1 |
24.2 |
Mar |
18.8 |
36.0 |
17.1 |
33.6 |
20.3 |
35.2 |
15.8 |
31.5 |
14.2 |
32.2 |
19.0 |
36.3 |
15.4 |
30.0 |
Apr |
23.4 |
39.9 |
21.8 |
38.3 |
24.1 |
37.6 |
21.4 |
37.0 |
20.5 |
38.1 |
23.9 |
40.2 |
21.5 |
36.2 |
May |
26.2 |
41.8 |
25.5 |
40.7 |
26.0 |
38.8 |
25.4 |
40.3 |
24.7 |
40.5 |
27.9 |
42.6 |
25.9 |
39.6 |
June |
27.0 |
38.4 |
25.3 |
37.0 |
23.9 |
34.4 |
27.2 |
39.3 |
27.1 |
38.7 |
26.3 |
37.8 |
28.3 |
39.3 |
July |
25.7 |
33.3 |
23.1 |
30.6 |
22.5 |
30.5 |
25.5 |
33.9 |
26.1 |
33.6 |
24.1 |
31.5 |
26.6 |
35.1 |
Aug |
24.8 |
31.9 |
22.4 |
28.8 |
22.0 |
29.6 |
24.3 |
32.0 |
25.6 |
32.5 |
23.6 |
30.4 |
25.9 |
33.3 |
Sept |
24.1 |
33.4 |
21.4 |
30.5 |
21.7 |
30.1 |
22.9 |
33.2 |
24.3 |
33.0 |
22.9 |
31.8 |
24.4 |
33.9 |
Oct |
20.9 |
35.8 |
18.4 |
32.0 |
20.0 |
30.4 |
18.6 |
33.4 |
19.0 |
32.5 |
19.8 |
32.6 |
19.5 |
32.9 |
Nov |
16.5 |
33.2 |
14.1 |
29.0 |
16.4 |
28.8 |
13.1 |
29.0 |
11.8 |
28.9 |
14.9 |
30.4 |
12.8 |
28.3 |
Dec |
13.0 |
29.8 |
10.9 |
25.9 |
14.1 |
27.8 |
9.1 |
24.4 |
7.4 |
24.1 |
12.1 |
28.2 |
8.2 |
23.0 |
Presentation for Providing Free Cooling in BT Shelters in the “Hinter Land”
The above details are the mean maximum and minimum temperatures in various cities in the “Hinter Land”. The selected cities do not include any of the costal towns as the costal towns have a different temperature pattern. 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 43oC and a peak time maximum temperature in India, in the hinterland can be 45oC with an occasional shoot-up. The corresponding minimum temperature can be 27oC on that day. A PCM of 36oC is ideally suited for such a climate and for a BT Shelter that is targeting a maximum temperature of 40oC inside the shelter.
The worst day in the year may have a temperature profile in a day as under:
40 to 45oC+ |
for 4hours |
36 to 40oC |
for 8 hours |
27 to 36oC |
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 cooling |
Shelter Temp. with 36C PCM |
Energy Load in KWH |
4 |
40-45+ |
50-55 C |
38-40 C |
5KWH Discharging |
8 |
36-40 |
46-50 C |
36-38 C |
5KWH Discharging |
12 |
27-36 |
37-46 C |
27-36 C |
Charging PCM. |
The PCM of Melting Point 36oC is well suited for the job. Depending on the size of BTS and ambient conditions, the Energy load will vary.
This presentation is made for starting an interaction with user. The user may evaluate, amend and interact with us. Go to our write-up on S-series32Cto45C PCMs.
TECHNO-COMMERCIAL STATEMENT OF PCM PRODUCT PHASE CHANGE MATERIAL S-SERIES LATEST™
| PCM Energy P. Ltd. | PCM Latest™ | PCM Latest™ | PCM Latest™ | PCM Latest™ |
| Product | Latest™32S | Latest™34S | Latest™36S | Latest™48S |
| Series | S-series Latest™ | |||
| Description | Viscous Semi-Solid near Phase Change Temp. | |||
| Appearance | Cream or Gray | |||
| Base Material | Inorganic Salts | |||
| Phase Change Temp. | 31-32oC | 33-34oC | 36oC | 48oC |
| Sub Cooling @ 1000 cycles | Small | Small | Small | Small |
| Specific Gravity | 1.45 | 1.45 | 1.45 | 1.45 |
| Latent Heat Theoretical | 230 Joules/g | 250 Joules/g | 260 Joules/g | 260 Joules/g |
| Latent Heat Practical | >200 Joules/g | >220 Joules/g | >230 Joules/g | >230 Joules/g |
| Spec. Heat | 2 Joules/g oC | 2 Joules/g oC | 2 Joules/g oC | 2 Joules/g oC |
| Thermal Conductivity | 0.6Watt/m oC | 0.6Watt/m oC | 0.6Watt/m oC | 0.6Watt/m oC |
| Congruent Melting | Yes | Yes | Yes | Yes |
| Flammability | No | No | No | No |
| Hazardous | No | No | No | No |
| Thermal Stability | > 10000 cycles | > 10000 cycles | > 10000 cycles | > 10000 cycles |
| Max. Operating Temp. | 100oC | 100oC | 100oC | 100oC |
| Rates | Available on request | |||
Latest TM 32S, Latest™ 34S, Latest™ 45S salts are similar to Latest™ 36S.
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. 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 solar 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 PCM material drops, the material solidifies, releasing its stored latent heat. PCMs absorb and emit heat while maintaining a nearly constant temperature. Within the equipment comfort range of 25°C to 45°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. PCMs may be used in Thermal Enclosures like Telecom Chambers or solar domestic hot water heating or passive solar space heating/cooling systems.
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 thickening and 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 PCMs, however, compare unfavorably with the newer generation of low-cost, highly efficient Phase Change Materials. Researchers now label these older compounds as "limited utility" PCMs.
Phase Change Materials perform best in containers that have a depth of one inch (25.4 millimeters). 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™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: 36C. There can be some freezing/melting in 3oC around it.
Latent Heat of Fusion: 250 KJoule/Kg (60 K. Cal/Kg).
----------------------- 340 KJoule/liter (81000 KCal/Cu.m)
*Most manufacturers report the heat of fusion in a temperature range, like 20oC to 40oC. 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.
--- PCM filled Panels. -------------- PCM filled Aluminum Pipes
3 Panels View ------------------- Telecom Shelter
Aluminum Bottles -- -HDPE Balls --------SS Ball --------- 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 i.e. Phase Change Material. 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.
PCM Manufacturers
Phase Change Material Manufacturers
PCM Energy P. Ltd
Mazgaon, Mumbai 400 010, INDIA
TEL: 91-22-23770100, 23774610, 23726950, 23723564. FAX: 91-22-23728264
Email: anmol@pcmenergy.com
Copyright and Usual Disclaimer is Applicable
Last updated:
15 February, 2013
Natural Air conditioning with PCM in Ceiling.
Renewable Energy PCM Cooled AC Office building in Netherlands.
Floating Balls of Rotterdam cooled (Air Conditioned) by PCM.
If you want your work to be done well, then go to a busy man.
The other one has no time.