Learn about the various heat pump integration practices that are followed internationally.

1. Best International Heat Pump Integration
Practices
- Prof. Satyanarayan Seshadri

2. Overview
• What are the conventional heating systems ?
• How are they integrated
• What are Heat Pumps
• How can heat pumps be integrated ?
• What are the differences between direct and indirect
heating methods
• Case study – Aspiration Energy
• Case study – International practices

3. Conventional Heating Systems
Steam generators
Hot water generator/
Boilers
Electric HeatersRadiant Tube

4. Heat exchangers

5. Conventional Integration Methods

6. Ambient Heat
Primary power
(Electricity)
ThermaGenTM
USABLE
ENERGY
Renewable
Energy
Conventional
EnergyThe major portion of the usable energy is
taken from the ambient heat, which is
renewable energy
What are Heat Pumps ?

7. Heatistakeninfromtheambient
1 KW
2 - 3
KW 3 - 4 KW+ =
The system pumps heat from a low
temperature reservoir to a high
temperature

8. Based on Integration Concept/ Level
Supply Level – Feed Water
Supply Level – Intermediate Heating
Process Level- Tank Heating
Classification of Integration Methods

9. Integration Points
1. Boiler Feed
2. Intermediate
Heating
3. Process Tank
heating

10. Hot Water
Generators
Steam Boiler Thermic Heaters Radiant Tube/
Electric Heaters
Feed water X ✓ X X
Make Up Water
Heating
✓ X X X
Process Tank ✓ ✓ ✓ ✓
Integration Applicability

11. Case Study – Ashok Leyland

12. Existing Process
Conventional Heat
Source
Electrical Heater
Application Engine Head washing
Temperature Range 50-60 ⁰C
Electricity
Consumption
24 kWh per hour
After Heat Pump
Project size 28 kWth
Present Consumption 12 kWh per hour
Units saved per year 86,400 kWh
Annual Carbon
Abatement
73, 440 kg

13. Case Study – TVS motors

14. Japanese Integration and Processes

15. Swiss Integration and Processes

18. German Integration and Processes

19. Pros Cons
Direct Heating
Quicker installations with less integration
The chemical fluid from WM will enter the HP
condenser directly
Heat loss will be minimal comparatively High scale formation inside the HP condenser
Heat exchanger effectiveness will be more
comparatively
The performance reduces over a period of time
leading to frequent cleaning of condenser in HP
Cheaper & simple integration
Condenser life will be less as frequent acid
cleaning required
Scale formation, if unattended may lead to
compressor failure
More maintenance time and cost
Condenser cleaning to be done by the HP
specialist/OEM
Direct Integration Vs Indirect Integration

20. Pros Cons
Indirect Heating
(Through PHE)
Chemical fluid will never enter HP circuit
Heat Loss will be slightly more due to additional
Heat exchanger (PHE)
Zero scale formation inside the HP. The heat
transfer to chemical happens only
through PHE,hence HP is not affected
PHE cleaning can be done by the existing team as
anyway every industry uses PHE for their process
Only PHE to be cleaned and hence no condenser
cleaning required
One more additional circulation pump is required
No acid cleaning required hence condenser
lifetime is more
No danger of compressor failure
Lesser maintenance time and cost
Performance is unaltered due to indirect heating
Maintenance does not affect the production

21. Be the proud
pioneer and save
the future…
>> Fast Forward to the Solar Future!! >>
Contact us @ info@aspirationenergy.com/044-42185301