Lighting in cold- and freezing rooms should provide a safe working environment by achieving a certain level of light intensity even at low temperatures. In addition, low power consumption is required in order to minimise the cooling required due to the heat emitted from lighting.
Different areas on the ship require special demands for lighting
Cold/freezing rooms on cruise vessels are classified as areas where very low temperatures are present. These rooms are used for the storage of food and so must be easy to clean. Luminaires should be designed according to USPH (United States Public Health). As well as being easy to install, the fixtures should also be maintenance-free and should provide sufficient light intensity at low temperatures.
Important factors when selecting lighting solutions for cold/freezing rooms:
- Easy to clean.
- Low minimum ambient temperature class.
- No maintenance and reduced power consumption (which means less cooling is required).
Easy to clean
The correct design of the luminaire is important in order to ensure easy cleaning in order to avoid impurities. When using brushes, pipes and sometimes high-pressure cleaners, the luminaires must have a high IP protection rating to withstand these pressures.
Using the correct combination of materials in the luminaire is important in order to ensure robustness and a long operating life. Materials and designs must be specially selected to withstand possible mechanical impact or damage that may occur when handling frozen goods.
Low minimum ambient temperature class
Temperatures in cold storage, refrigeration and freezing rooms on cruise vessels can drop to as low as -40°C. It is therefore critical that the lighting solutions installed in these areas are carefully selected to operate reliably at these temperatures.
No maintenance and reduced power consumption
An important requirement on-board a cruise vessel is to install luminaires that are virtually maintenance-free. This reduces or eliminates the labour costs primarily associated with the maintenance, servicing and replacement of luminaires. The luminaires in freezing rooms should consume as little energy as possible in order to minimise the cooling required due to the additional heat emitted from the luminaires. The efficiency and life span of LED lighting continues to improve. LED luminaires are virtually maintenance-free, which means that cruise vessels with LED lighting will have lower operating costs compared to vessels with conventional luminaires. In addition, the reduced power consumption of LED lighting onboard has a positive impact on the cruise vessel’s Air Conditioning system, as less heat is emitted from the lighting, which means less AC power is needed and fuel consumption is reduced. The initial investment of the LED installation may be higher than a traditional lighting installation, but the reduced energy consumption and lower maintenance costs of LED lighting means that this price difference will be quickly recouped and payback on the investment is recovered quickly.
All lighting products for cold/freezing rooms should be designed in accordance with marine standards and regulations.