Removing barriers to energy efficiency in municipal heat and hot water supply

School №9 in Astana

The current external windowsill chinks on the filler structures are winterized and covered with decorative panels, which enable to reduce heat leakages from the building.

There was a repair of the heat point room with the installation of a separating partition to separate the storage room from the AHCCS equipment.

An installed circulating pump with a frequency drive in the heat point enables to keep constant pressure differential in the heating system regardless of its workload at any moment of the time.

Balanced valves installation enables to implement a hydraulic connection of the heating system standpipes and avoid underheating and overheating in the system.

Such a decision to connect pressure survey points enabled to reduce the number of pressure gages in the heat point in three times and reduce the dimensions of the heat point.

To winterize windowsill chinks heat insulation material of 50 mm is used. This solution (a sandwich panel) will be a more effective way to prevent cracks as they could occur at heat insulation use with a plaster façade, which could cause cracks on an old wall and a new plaster layer joint.

Dismounting and installation of a new heat energy input junction with its putting into operation was carried out for 6 hours.

The reconstruction of the heating system in the gym was carried out. The cast-iron radiator with insufficient heating surface was changed into fancoils. The air temperature in the gym was normalized. There is an opportunity to regulate necessary temperature.

Assembly and putting into operation of the forced exhaust ventilation enabled to solve the problem of high humidity in the gym, which is a source of mould on the internal surfaces of the walls.