Improving Thermal Behavior of the Steam Mill Building, London

Project Specifications

Project Type:

Energy optimization and thermal performance analysis

Location:

London, England

Study Period:

2023–2024

Climate:

Cold and humid

Architect & Energy Performance Consultant:

Amirhossein Janzadeh, Rymast Architecture Studio

Software Used:

DesignBuilder, EnergyPlus

Project Overview

This project was developed with the purpose of improving the thermal behavior and environmental performance of the historic Steam Mill building — a heritage structure that, over time, requires comprehensive re‑evaluation in order to meet modern energy standards.

The main focus was to maintain the architectural and cultural value of the building while reducing energy consumption and enhancing thermal stability within indoor spaces. This objective is particularly vital for heritage buildings that have undergone adaptive reuse.

The study analyzed the heat transfer through walls, energy exchange between indoor and outdoor environments, and the pattern of airflow inside the spaces to identify strategies for sustainable improvement.

Goals, Focus Areas, and Main Approaches

The project is based on energy‑performance simulation and thermal behavior analysis, providing a clear insight into how the building reacts under various climatic conditions.
Analytical Focus Areas
- Evaluating thermal behavior of the building envelope
- Assessing the role of openings in natural ventilation
- Analyzing the performance of existing materials under external temperature variations
- Exploring improvement potential through low‑intervention retrofitting strategies
Key Principles and Conceptual Approach
- Preserving architectural heritage while enhancing energy efficiency
- Exploring thermal optimization methods based on London’s climatic conditions
- Reducing dependency on mechanical heating and cooling systems

Results and Findings

The study indicates that the thermal behavior of old industrial buildings is strongly influenced by their massive walls, limited openings, and non‑insulated materials.

Main qualitative insights include:

Improving natural ventilation can significantly reduce indoor temperature fluctuations.
Minor envelope retrofits effectively decrease heat losses.
Adopting modern energy‑efficient strategies enhances thermal comfort levels.
Maintaining historical integrity alongside improved thermal performance is achievable.

Project Conclusion

The Steam Mill project stands as a successful example of integrating sustainable architectural principles within historic buildings.

It demonstrates that through scientific analysis and energy‑based design strategies, the performance of heritage structures can be upgraded and adapted to modern standards — without compromising their historical authenticity.