Airbus Building 45

2,039 m² Facility
Three-Storey Office Building
— ROI / Carbon Saved / Output
— ROI / Carbon Saved / Output

M&E Services Design.

The Airbus Building 45 project involved the full mechanical and electrical services design for an existing office facility in Portsmouth, Hampshire, a key hub for advanced engineering and aerospace on the UK South Coast.

Salvis delivered a comprehensive Stage 3–4 M&E design package, including dynamic thermal modelling, HVAC system sizing, mechanical ventilation design, and electrical infrastructure to support new plant and services within a modern Portsmouth office refurbishment project.

The Challenge:

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Accurately modelling heating and cooling loads across a 2,000 m² multi-zone building.
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Designing HVAC systems for varying occupancy densities and usage profiles.
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Coordinating ventilation, cooling, and heating systems across three floors.
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Integrating new VRF systems into an existing building fabric.
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Providing electrical infrastructure to support mechanical plant.

The Solution:

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Salvis developed a fully coordinated M&E design solution built around real performance modelling.
Dynamic Thermal Modelling:
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Undertook detailed IES-based building modelling to calculate heating and cooling demand.
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Analysed conditions including external design temperatures down to −10°C (winter) and peak summer loads based on July/August profiles.
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Calculated total building loads: heating demand ≈ 88 kW, cooling demand ≈ 143 kW.
VRF Air Conditioning System:
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Designed a full Variable Refrigerant Flow (VRF) system across all floors.
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Selected Mitsubishi Electric systems including multiple indoor unit types (ducted, cassette, wall-mounted) and centralised outdoor condensing units up to 100 kW capacity per system.
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Delivered zone-by-zone control for occupant comfort and efficiency.
Mechanical Ventilation:
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Designed mechanical supply and extract ventilation systems with heat recovery by implementing Mitsubishi Lossnay units (LGH-80RVX) to manage 2,039 m² across all floors.
Electrical Services Design:
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Designed power supplies for all mechanical plant and equipment.
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Completed cable sizing and containment design, and coordination of electrical loads with HVAC plant.
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Ensured infrastructure supported VRF systems, ventilation units, and auxiliary systems.
Thermal Modelling Heating & Cooling Analysis
HVAC Systems VRF Air Conditioning
Ventilation Design Heat Recovery Systems
Electrical Design Plant Power Infrastructure

Frequently Asked Questions

  • Dynamic thermal modelling uses simulation software to predict how a building performs under different conditions. It calculates heating, cooling, and ventilation demands to ensure systems are correctly sized and energy efficient. 

  • VRF systems provide flexible, efficient heating and cooling with individual zone control. They are ideal for offices where occupancy and thermal loads vary throughout the day. 

  • Heat recovery systems reuse energy from exhaust air to pre-condition incoming fresh air. This improves efficiency, reduces energy consumption, and maintains good indoor air quality. 

Still have Questions?