Join Our Team

sales@sunbest.in
+91-9994094400

Solar Water Heating


Dairy: High Temp Heating


Solar Compound Parabolic Collector (CPC) at Hatsun Agro Product Limited, Salem


Project Overview

Hatsun Agro Products (HAP) Limited - Salem plant requires a large quantity of hot water at a temperature of 90- 95℃ for ice cream processing as well as boiler feed water.

  • The plant requires 35000 L of hot water at a temperature of 90- 95℃ for the process heat in ice cream making and around 40000 L to 50000 L  for the boiler feed water every day
  • The hot water for processing is produced using steam with a plate heat exchanger (PHE)
  • The average coal consumption/day is 11.3 tons in the 8-ton boiler

SUN BEST Solution

Dairy: High Temp Heating
  • Based on the energy demand, 220 numbers of CPC 18 collectors, each 3.28m² area are installed to provided 25,000 to 30,000 litre hot water of around 90 -95℃
  • Each bank of 110 CPCs is connected in a pressurized primary loop with expansion tank, pump, auto refilling water and a plate heat exchanger.
  • The secondary loop consists of cold storage water and pump coupled to the plate heat exchanger. The primary loop works at 2-3 bar pressure heating water to 110-120°C
  • The cold water passes through the PHE and get heated up to a temperature of 95 Deg C and it is taken to the process.
  • The requirement of hot water for processing starts early morning at 4 AM and a few times during day and also in the night. Hence a 21 KL storage has been designed.

Benefits

  • A savings of 672 kg/day or 201 tonnes/year was recorded
  • The system is expected to give a saving of 7262 tonnes of CO2 in 15 years
  • Forest cover savings of 16920 acres over 15 years

Challenges

  • The distance of process application from the storage is 300 m and drop of 3°C was observed during this transfer; this drop is minimized by insulating the pipes.
  • The roof is very tall. Due to the 15m height of the roof, the installation team had a major hardship during installation. The team worked in a safe and efficient manner

Preheating Boiler Feed Water


Solar ETC Collector at Prara Leathers Pvt Ltd


Project Overview

  • M/s. Prara Leathers Pvt Ltd, Ranipet processes finished leather. The company uses hot water generated in an insulated storage tank of capacity 25 KL using steam mixing.
  • A 3 ton thermax boiler is used to produce steam using firewood at the rate of 250 – 280 kg/hr. A solenoid valve system fitted with steam is used to control the water temperature to 65℃ in the 25 KL tank.
  • As the site receives solar radiations for more than 300 days/year, SUN BEST had installed a roof mounted Evacuated Tubes Collectors (ETC) system of capacity 50,000 – 60000 LPD solar water heaters to reduce firewood consumption in the boiler as well as to promote clean energy in leather processing.
  • 196 ETC collectors are divided into four groups and fitted on the roof of the factory.
  • Each 49 x 2 Nos ETCs are connected in a primary loop with expansion tank, pump, auto refilling water and a plate heat exchanger.

SUN BEST Solution

Preheating Boiler Feed Water
  • 196 ETC collectors are divided  into four groups and fitted on the roof of the factory.
  • Each 49 x 2 Nos ETCs are connected in a primary loop with expansion tank, pump, auto refilling water and a plate heat exchanger.
  • The secondary loop consisted of cold storage water and pump coupled to the plate heat exchanger. The primary loop works at a temperature of 75-80℃.
  • The cold water passes through the PHE and gets heated up to a temperature of 65℃ and it is taken to the process.

Benefits

The system saves:

  • 375 tonnes/year of firewood
  • An emission reduction of 10089 tonnes of CO2 in 15 years
  • An equivalent of 23507 acres of forest saving

Copyright ©2021 SUN BEST All Rights Reserved