Case Study

Case Studies 1

All seasons control for Powder Production Line (Johnson & Johnson, Thailand)


The powder process is necessary to control the room temperature and humidity conditions; as this process relates to the density/pressures of the rooms, and in turn it impacts the quality of the products that the company produces. Therefore, it is necessary to improve the system that can control temperature and humidity in the room by making it very powerful and stable in usage.


Work Scope

– Design the HVAC system for a controlled temperature and humidity as defined by BP 1- BP5 (Mixing Room, Filling Room) to create improvements for existing equipment.
– Calculate power consumption of the system design and present it in comparison with the existing system.
– Construction and Installation the system to meet requirements


Client’s Problem

There are cases where our clients cannot control the humidity and temperature in production line, due to the quality of the powder.


1. Efficiency of existing equipment is going down and the present climate is going up
2. Analog Control is slow in its response.


ENM’s Solution

We provide a “Turnkey construction” to suit the cooling demand and climate change. We provide “Robatherm” Air Handling Unit for heavy duty for their operation in all Units. The highlight is our design for Control, in which we use DDC to control them all for 24 hours. Therefore, the Temperature and Humidity is maintained to meet J&J requirements.

Case Studies 2

From Egg to Chicken; Smart Hatchery

Today , the competition for Efficiency means lower operation cost and Higher yield. Hatchery practices the focus on monitoring and management target to good hatchability and chick quality. Good monitoring and management in egg and hatchery will maximize the hatchability of eggs and will ensure the finest chick quality at the possible start for good performance.

HVAC system is the basic necessity starting from the process of egg-receiving through Cold storage, Disinfection , Incubator areas, Hatching areas, Processing room by the end at the Loading room. Every room needs good control in Temperature and Humidity with pressure balance in order to get up to the hygienic standard.

Its extensive HVAC services are closely regulated by automation controls supplied and engineered by ENM.


ENM has put out two main function systems. One is for the Setter and Hatcher, where it provides space by space control, while the other controls environmental conditions in most other areas. HVAC and M&E system have been integrated with networks that allow centralized management and the full monitoring of the entire plant. Each system has graphics-based supervising as its main operator interface. The main system for Setter & Hatcher closely control Air handling units, each of which serves a different area. Other control functions include sequencing chillers and heater in accordance with demands. In addition to this, there is also another major monitoring role, which include logging the reading from hot and chilled water meters and a large number of electricity sub-meters, enabling the Hatchery plant to monitor usage across its various biological operations and maximizing energy efficiency. Another of the system’s duties is to monitor the air conditioning units and temperature levels in order to meet the requirements of Incubator systems.


In most areas, air sensor measurements are generally used to maintain the space temperature and humidity at desired level. Most of the AHU fans have variable speed drives. If required, these can be controlled by basis of room air quality, as measured by CO2 sensors. This should allow the fans to be regularly run at lower speeds-thus saving energy without affecting room conditions.


Some AHU and the area of Hatchery can be controlled as an individual time zone. This means that the operation of the plant can be closely matched to an area’s occupancy. The use of a calendars function is to preset the times that the air conditioning needs to operate, ensuring that it is automatically brought on prior to a room or other spaces being used, and switched off again when no longer required. This would create the outcome of optimized conditions and efficient energy savings.