What are the necessary arrangements for building a coldroom? What are the requirements?
The most important thing is to have sufficient electric power and circuit breaker at the future location of the condensing unit (with one or three phase, according to the available power supply). We need a junction box for the installation. The wastewater of the coldroom springs at the evaporation unit inside the room, so we have to channel the water drops. The builder is responsible for this if it’s inside the room, but there is a need for an air drain trap. This can be an already existing siphon or a dropped and flush drain built specially for this purpose. The drain has to be placed behind the room, outside the walls. The place, where you want to build your coldroom, has to have leveled, load bearing insulated floor. If it’s going to be an outdoor coldroom there has to be a roof to prevent rainwater falling on it and we also suggest a protection from direct sunlight.
What kind of parameters do I have to give when I ask for an offer?
The most important is the outside dimensions of the coldroom and if it’s possible we also need a layout (it can be hand drawn) so we could make a more precise offer. The potential costumer should decide the surface materials he wants us to use for his coldroom (painted steel, stainless, etc.) and also the location of the condensing unit if it will be built separately from the coldroom. We need your contact data (address, e-mail, phone number and a name) where we can send our offer and where we can reach you if we have any additional question. The more precise description or layout you can give us the easier we can make our offer and it will also help the preplanning procedure.
Where should we place the air condensing unit?
The best-case scenario is when the air condensing unit is built out of the coldroom because this way it can reach its highest potential function. In this case it shouldn’t be built on the southern side because it can reduce the efficiency of the air condensing unit throughout the summer. We can build the air condensing unit not just outside but inside the coldroom if the air ventilation is good enough (basement, stairway, attic, etc.).
The mechanical equipment can be placed on the top of the coldroom as well. In this case the most important thing we need to know if there is a possibility for proper ventilation which is necessary for the best performance of the air condensing unit. If the ventilation is not good enough it can significantly reduce the efficiency and the life span of the coldroom. (Think about a commercial kitchen where the mechanical equipment of 4-5 coldroom is placed all in the same area. There is a possibility to expand the ventilation capacity with proper air change units or with a ventilator.
How much energy does a coldroom use?
The power-handling capability input of a coldroom is heavily depends on the cooling capacity. But the user can influence energy consumption. In our coldrooms for normal temperature we can reduce energy costs on the long run if we build an insulated panel floor.
In every coldroom doors should be opened only for the minimum time even when operators are transferring or relocating the products. This has a significant effect on power-handling capability. We can determine the energy consumption in kWh depending on the cooling capacity but the actual consumption will be determined during the application by the operators.
How much noise does the freezer unit make?
The noise of the condensing unit highly depends on its performance rate and also its location and also the type of construction.
We recommend you to place the condensing unit where it does not disturb anyone, either day or night, and also where it does not violate the regulations of the competent authorities. It is also very important to consider the environment and the noise of the air condensing unit. We recommend you to coordinate with your coldroom builder when you decide where you are going to build your air condensing unit. After that you should check on with the competent authority if they allow the building of your outdoor air condensing unit (considering noise pollution, heritage protection, cityscape, etc.).
Silent air condensing units also exist on the market, which have a very low noise during operation. We recommend these for those locations where noise pollution has incredibly strict regulation (such as residential areas or courtyards).
The evaporator of the coldroom has minimal noise, only the ventilators can be heard which is not relevant outside the coldroom.
How much noise and dirt will be involved during the installing?
For being the most cost-effective we work with industrial panels which are seam closed and cut on the spot. This means a certain amount of noise and dust is involved. If this is not allowed and the customer indicates it in advance we can precut the panels at our premises. In this case the installation will proceed with only a minimum amount of noise and dust.
How long does it take to build a coldroom?
It depends on its size and on the location. Smaller (5-10m3) coldrooms can be installed within a day. If you need a larger coldroom we can give you an estimated time schedule after a field survey.
What are the building phases of a coldroom?
In case of a coldroom with insulated floor we start with laying the insulated panel floor down, if there is no need for a floor we fasten U-channel profiles to the base. After that we raise the side walls and we lift the ceiling to its place. In the end we install the door, insulate the panel joints and put the arched plasters to their place. During these phases we also install and start to run the cooling unit.
What are the recommended temperatures for different types of food and how long until they expire?
Raw materials should be stocked according to the relevant official (HAACP) regulations. Expiration date and storing temperature is also important beside the specialized storage system. Storing temperature has to be registered frequently, this will prove that a certain product has been stored between the best circumstances.
The following table will offer you some help by recommending how long certain products can be stored.
|Product||Cooling temperature range (°C)||Relative humidity (%)||Recommended storing period|
|Apple||-1 to +1||85 – 90||2-7 months|
|Beans (dried)||+0.7||70||6 months|
|Beef (fresh)||+1.75||87||3 weeks|
|Beef (frozen)||-18 to -20||80 – 85||3-8 months|
|Butter||-10 to -1||75 – 80||6 months|
|Cabbage||0 to +1||85 – 90||1-3 months|
|Carrot||0||85 – 90||1-2 weeks|
|Cauliflower||0 to +2||85 – 90||2-3 weeks|
|Cheese||-1 to +1.5||65 – 75||3-10 months|
|Cherry||+0.5 to +1||80||1-3 weeks|
|Cucumber||+2 to +7||75 – 85||2 weeks|
|Eggs||-1 to -0.5||80 – 85||8 months|
|Fish (fresh)||-0.5 to +4||90 – 95||1-2 weeks|
|Fish (frozen)||-20 to -12||90 – 95||8-10 months|
|Grapes||-1 to +3||85 – 90||1-4 months|
|Green beans||0||80 – 90||1-3 weeks|
|Ice-cream||-30 to -20||85||2-12 weeks|
|Lamb (fresh)||0 to +1||80 – 90||5-10 days|
|Lamb (frozen)||-24 to -12||80 – 90||10 months|
|Lemon||+5 to +10||80 – 90||2 months|
|Lettuce||0 to +1||85 – 90||1-2 months|
|Melon||+2 to +7||80 – 90||1-8 weeks|
|Milk||0 to +2||80 – 85||1 week|
|Mutton (fresh)||0||80 – 85||10 days|
|Mutton (frozen)||-12 to -18||80 – 85||3-8 months|
|Orange||0 to +1.2||85 – 90||8-10 months|
|Peach||-0.5 to +1||80 – 85||2-4 weeks|
|Pork (fresh)||0||80 – 85||3 weeks|
|Pork (frozen)||-12 to -18||80 – 85||3-8 months|
|Potato||+3 to +6||85 – 90||6 months|
|Poultry meat (fresh)||0||80||1 week|
|Poultry meat (frozen)||-30 to -10||80||3-12 months|
|Prunus armeniiaca (Armenian plum)||-0.5 to +1.6||78 – 85||1-2 weeks|
|Tomato (green)||+10 to +20||85 – 90||3-4 weeks|
|Vegetables (frozen)||-24 to -18||–||6-12 months|
How will you deliver the coldroom to my premises? How will it fit in?
Our coldrooms are always delivered flat-packed (except uniquely designed wine coolers). This means we deliver the room items in panels, and during the building phase we put the panels into their places one at a time. Our first class panels are delivered with protection foil on to avoid any damage during the transport. Because we produce the panels only after a field survey or previous consultation it is most certain that the coldroom will fit in. If the building dimensions would change in the meantime it is absolutely necessary to inform us as soon as possible.
How can I reduce my building costs?
You can cut your costs if you order industrial panels because they are made on a production line which means they have the best benefit-cost ratio. At coldrooms for normal temperature you can significantly reduce your costs if we build the room on U-profiles without an insulated panel floor. This means that the level of the flooring is the same inside and outside, because there is no insulated panel floor built in. The cleaning of the coldroom is also easier in this case which makes it more cost-efficient. However, we must tell you that if the floor has no insulation the energy costs will be more because of the greater heat loss.
If you don’t need a coldroom with locker you can reduce your cost with a simple door opening system, and it is a possibility to build the coldroom door with plastic hinges which also eases your budget.