MHI Specifications

The role of HVAC equipment in achieving Net Zero

This module focuses on the role that buildings have to play in achieving Net Zero and understanding how HVAC equipment can be used to further that gain. Air to air and air to water heat pump design is discussed, along with specific application for producing high temperature potable water. Ventilation with energy recovery and holistic design to recover energy between different HVAC systems are also demonstrated.

Refrigerant in Safety Practice

This module focuses on the safe design and application of modern VRF systems using lower-GWP refrigerants, with particular emphasis on R32. The environmental and regulatory drivers behind the move away from higher-GWP refrigerants are explored, together with refrigerant safety classifications and the respective roles of BS EN 378 and BS EN IEC 60335-2-40. Practical design considerations including refrigerant charge, room size, pipework routing and potentially releasable charge are discussed, alongside additional safety measures such as leak detection, alarms and shut-off valves. A worked R32 VRF example demonstrates how these requirements can be applied to create a safe, compliant and auditable system design.