# T1125 - Low Temperature Hot Water \(LTHW\) Software Modelling at Gateway Building, Southend on Sea

> A sourced UK public sector contract award published by UNIVERSITY OF ESSEX.

## Key facts

- Buyer: [UNIVERSITY OF ESSEX](/buyers/university-of-essex/contract-awards)
- Supplier: Hydronic System Optimisation Ltd
- Award value: £0
- Tender value: £20,000
- Award date: 10 September 2025
- Published: 10 September 2025
- Contract start: 18 March 2025
- Contract end: 18 March 2026
- Stage: awarded
- Procurement category: works
- Notice ID: 7cc024c5-ea0d-441d-9997-a25ab4cdbae8-862942
- OCID: ocds-b5fd17-b17e890f-4666-4955-9eec-0a898c553384

## Description

The University of Essex is seeking tenders to create a detailed software model of the Gateway Buildings Low-Temperature Hot Water \(LTHW\) heating system, aimed at analysing system performance, identifying inefficiencies, and recommending improvements to optimise energy use and reduce carbon emissions and utility costs\. The overall scope of the project is to create a model that will simulate the hydronic behaviour of the LTHW system, taking into account full hydraulic system configuration and components, control logic, variable outside temperature conditions based on localised weather data and variable building heating/cooling load \(minimum resolution 1 hour\)\. Calculation engines must account for both hydraulic behaviour and thermal energy flows at a full system level\.

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## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/7cc024c5-ea0d-441d-9997-a25ab4cdbae8-862942)