Emerson District Heating Solutions User manual

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District Heating Solutions

2

Clean Energy Heating Policy

34%

50%

70%

0%

10%

20%

30%

40%

50%

60%

70%

80%

2016 2019 2021

Ratio of Clean Heating

Sever Cold Area

Cold Area

Cold Winter &
Hot Summer Area

Warm Area

Winter Clean Heating Plan for the Northern Region
(2017-2021)

- Issued on Dec.27,2017

- Jointly issued by 10 ministries and commissions

- The clean heating rate in the northern region will reach 50% in

2019, and 70% by 2021, replacing 150 million tons of loose­burning coal

- For “2 + 26” urban areas, by 2021realize clean heating and
remove all coal boilers below 35 tons in urban areasin county
townsthe clean heating rate reach 80% and remove all coal
boilers below 20 tons; In rural areas, the rate of clean heating
reaches more than 60%.

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Heating

Energy

Efficiency

Low

Ambient

Heating

Capacity

Reliability

The Challenges of Low Ambient Heating With Air

Source Heat Pump

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Emerson Low Ambient Temperature ASHP Solutions

EVI Scroll Heating Technology

• Create a second suction port in the scroll

• Through the second suction circuit, increase the refrigerant flow and

enlarge the enthalpy difference of the main refrigerant circuit

Normal module refrigerant circulation

EVI module refrigerant circulation

EVI Compressor

EVI Cycle Schematic Diagram EVI Cycle Pressure-enthalpy Diagram

Brazed plate

heat exchanger

Expansion

Valve

Vapor Injection

Evaporator

Increasing

cooling capacity

increasing

heating

capacity

Optimized

compression

process

Main flow + injection flow

main flow

injection flow

Condenser

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EVI and Liquid Injection System Schematic

Diagram

Condenser

Evaporator

Economizer

Sol V

EXV

EXV

Liquid Injection

EVI

Filter drier

Enthalpy

Pressure