HOT|COOL NO. 3/2019 - "Big Markets: China and Poland


LANGKAZI PROJECT IN BRIEF In December 2018, the solar DH system in Langkazi (Tibet, China) was completed. It has a 22,000 m2 solar collector field and covers more than 90 % of the heat demand in Langkazi. The system also has a 15,000 m3 storage pit in order to store the energy, so it can be used when demanded. As part of the project, a 25,000-meter-long piping infrastructure has been constructed in order to connect 82,000 m2 households to the solar DH system.

ZHONGBA PROJECT IN BRIEF The city of Zhongba (Tibet, China) has a 21,000 MWh solar district heating system under construction which is expected to be finished by the end of the year. As in Langkazi, the project also includes piping network, connection to buildings and installation of radiators. The system has a 34,650 m2 collector field and a 15,000 m3 tank provides storage of the solar energy and enables more than a 90 % coverage of the annual heat demand.



Altitude: 4.700 meters above sea level

Altitude: 4.600 meters above sea level

34,650 m2 solar collectors

22,000 m2 solar collectors

15,000 m3 storage tank (Steel tank)

15,000 m³ Pit Thermal Energy Storage (PTES)

2,8 MW Oil fired boilers for back-up energy

2 x 1,5 MW electrical boilers for back-up energy

6,1 MW peak heat demand

4,3 MW Peak heat demand

~21,000 MWh Yearly heat consumption (Oct-May)

~16,800 MWh Yearly heat consumption (Oct-May)

90+ pct. solar fraction

90+ pct. solar fraction

For further information please contact: Thomas Karst,

How do you locate heat loss and leakages? Imagine if you could use smart meter data to unlock the distribution network black box, locate leaks and heat loss and see what happens in the pipes below your feet. The solution is ready. It’s up to you to take the next step.

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