The project involves fitting professional kitchen extractor hoods with heat recovery systems on the exhaust air fan. This recovery can be performed in three different ways:
via an air-to-air recuperator integrated into the hood which propels the preheated air into the kitchen (integrated compensation).
via a separate air-to-air recuperator which also allows the make-up air to be preheated through a plate heat exchanger.
via an air/water heat recovery unit to pre-heat domestic hot water
The company will be able to save an estimated 70-100% on heating consumption in the kitchen, and around 50% on domestic hot water production, by installing this technology, which has been on the market for over 5 years. However, implementing this measure can be complex with a medium-to-long-term return on investment, and requires the temporary shutdown of production during the technical installation stage.
Replacement and centralisation of cold production units with a variable speed compressor
The project consists in fitting cold rooms and/or freezers in the butcher shop with cold air curtains to prevent warm air flows from entering cold rooms and freezers when their doors are opened.
By installing this technology, which has been available on the market for over 5 years, the company can save on its electricity bills by an estimated 10%. This measure is rather easy to implement and would entail a medium-to-long-term return on investment. Implementing this measure does not require production shutdown during the technical installation stage.
Replacement and centralisation of cold production units with a variable speed compressor
A refrigeration cycle works by drawing heat from the evaporator and discharging it to the outside (condenser). The project’s idea consists in recovering this heat to be discharged to preheat domestic hot water (DHW), which is necessary in every restaurant. The exchanger is placed between the compressor and the condenser of the cooling unit.
In practice, recovery can be implemented in three different ways:
Via external exchanger: an exchanger is connected on one side to the compressor outlet and on the other to the hot water tank (partial recovery).
Via internal exchanger: a “desuperheater” through which the refrigerant flows are inserted at the bottom of the hot water tank upstream of the condenser.
Via condensation water collector: all the refrigerant is condensed inside the hot water tank (total recovery).
By installing this technology, which has been available on the market for more than 5 years, the company can save significantly on its energy bills, and even cut its hot water consumption, which will result in reducing its carbon footprint (the benefits will depend on the initial mode of domestic hot water production). However, implementing this measure can be complex and taking into account energy costs alone may not be sufficient for a return on investment. It also requires temporary production shutdown during the technical installation stage.
Replacement and centralisation of cold production units with a variable speed compressor
In a restaurant, the cold room’s refrigeration cycle is often subject to variations in operation.
The air evaporator is influenced by the climate of the room it cools (opening and closing of doors, loading of food, etc.) while the condenser also depends on the climate through the outside temperature.
The project consists in replacing small production units supplying cold rooms with a main, centralised cold production unit, controlled with a frequency variation on the refrigeration compressor motor.
By installing this technology, which has been available on the market for more than 5 years, the company can save up to 15% on its electricity bills and reduce its carbon footprint. However, implementing this measure can be complex and requires the temporary shutdown of production during the technical installation stage. But the return on investment will be fast thanks to the savings achieved.
Smart climate control is performed on a large set of building data over long periods to identify malfunctions and savings opportunities, while enabling the user to assess the effectiveness of corrective measures that are taken.
This technology is suitable for hotels with manually controlled technical equipment such as heating, ventilation, and air conditioning.
Setting up this new technology will allow the company to save energy, while slightly reducing its carbon footprint. This measure is simple to implement with a medium-to-long-term return on investment and it does not require shutdown of production during the technical installation stage.
Building management system (BMS) is an interface which remotely controls electronic and mechanical systems in one or more buildings. In particular, BMS takes care of the remote control of the hotel’s heating, ventilation and air conditioning systems, which consume a lot of power.
This technology is suitable for existing hotels wishing to retrofit a BMS system, as well as new buildings where BMS is implemented from the design stage.
The company will be able to make substantial energy savings and reduce its carbon footprint by installing this technology, which has been on the market for over 5 years. This measure is quite simple to implement, even if there is a medium-to-long-term return on investment and it requires a partial shutdown of production during the technical installation stage.
Decentralisation of domestic hot water production with or without thermodynamic water cylinder
The project consists in separating the hot water production system from the heating system. This can be done in two ways:
through partial decentralisation in summer, by adding a small boiler to heat the domestic hot water. It will allow to shut down the main boiler in summer but will still be connected to the hot water system. Decentralisation can also not be total if the domestic hot water production system is separate, either following the installation of a thermodynamic water cylinder operating at high temperature (advantage of the COP on electricity consumption linked to the production of DHW compared to an electric boiler)
through the installation of a boiler sized to cover the DHW requirement, or the installation of suitable electric boilers with storage capacity to limit power demand peaks.
This technology is particularly suitable for hotels with a high demand for domestic hot water. Setting up this new technology will allow the company to save energy, while reducing its carbon footprint. However, implementing this measure can be rather complex with a medium-to-long-term return on investment, and requires the temporary shutdown of production during the technical installation stage.
Heat recovery via heat pump on grey water or cooling circuit
The project consists in recovering the heat lost in the grey water system (showers, sinks, washing machines, dishwashers, etc.) of a hotel or restaurant by reusing it to heat domestic hot water (large consumption in such facilities). The process involves the recovery of heat via a water-to-water heat pump from a cold source at high temperature throughout the year.
This technology is particularly suitable for hotels with a high demand for domestic hot water.
By installing this technology, which has been available on the market for more than 5 years, the company can save on its energy bills and reduce its carbon footprint. However, implementing this measure can be rather complex with a medium-to-long-term return on investment, and requires the temporary shutdown of production during the technical installation stage.
The heat recovered from the condensers of the refrigeration units is used to heat domestic hot water. It is a refrigeration cycle that works by drawing heat from the evaporator and discharging it to the outside (condenser). The idea behind the project involves recovering this waste heat to preheat domestic hot water (DHW).
This technology is suitable for food businesses with refrigeration units (cold rooms, refrigerated units, air conditioning, etc.).
By installing this technology, which has been available on the market for more than 5 years, the company can save on its electricity bills and reduce its carbon footprint. However, implementing this measure can be complex with a medium-to-long-term return on investment, and requires the temporary shutdown of production during the technical installation stage
The project involves installing sun control window films on the exterior glazing, which can help reduce the amount of solar heat entering the building. In summer, air conditioning needs and associated energy consumption are reduced. In winter, the need for heating and associated energy consumption may increase slightly.
Sun control window films are suitable for commercial buildings, shop windows and existing businesses with large glazed areas which are likely to overheat inside and have increased air conditioning needs due to solar radiation.
By installing this technology, which has been available on the market for more than 5 years, the company can save on its electricity bills and reduce its carbon footprint, but above all improve comfort. This measure is relatively simple to implement, has a quick return on investment and does not require production shutdown during the technical installation.
There are different types of solar film that can be used to control the solar radiation according to need and season, guaranteeing protection and thermal optimisation in both winter and summer, without any loss of luminosity.
