Network temperatures and flow rate: probability of district heating in Canberra, Australia

Published: 9 April 2018| Version 1 | DOI: 10.17632/ngngkp5cwh.1
Contributor:
Stanislav Chicherin

Description

A prototypical district was created based on the existing district located in Canberra, Australia. The case study represents a virtual city district that consists of one producer, five consumers and a total length of 5 561 metres. Calculations were performed using Microsoft Excel, a commercial spreadsheet programme, and weather evaluations are based on Australian native data. The daily minimum air temperature is derived from real-life operational records for Year 2017 at the Canberra Airport Station. It has a number of 70351, was opened in 2008 and situated within a latitude of 35.31° S, longitude of 149.20° E, and 577 m elevation. This data set employed 9 different scheduling strategies for a DH system. At these conditions, the design outdoor temperature (DOT) set is {-3.3; -2.6; -8.7} C, whereas the annual average outdoor temperature is 5.81C. Circulation pump is a key component to ensure sufficient flow circulation of hot water from a DH plant to a substation. The electricity consumption of a pump in each time period can be determined by means of equations. The overall heat loss defined as the ratio of the heat flux to the thermal resistance is given as well.

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Categories

Hydraulics, Network (Computer Science), Thermal Precipitation, Pump Modulation, Thermal Energy, District Heating, Building Heating

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