April 20, 2024

How to set the budget according to the lighting area?

Let's share a little trick: estimate the lighting budget based on the area. This is useful for both Party A, designers and vendors.

In fact, it is very simple. We can call it the “power density method”, that is, calculate the number of lamps according to the power density required to reach the required illumination, and then multiply the price of the lamps to get the budget.

Give a chestnut :

If there is a 60000m2 shopping mall that requires a basic illumination of 300lx, you need to estimate the lighting budget, what should I do?

1. Basis: According to the standard, the power density value of 300lx is taken as 12W/m2, and the total power of 60000m2 is expected to be 720kw. If you choose a 70W gold halide downlight A (estimated total lamp power 80W), you need 9000 sets. This amount is multiplied by the unit price of the lamp, such as 1,000 yuan, the basic budget is about 9 million. This estimation method is applicable to situations where the product is still uncertain.

Note: The premise of this algorithm is that it is necessary to select "a product with a power density value of up to 12 W/m2 when it reaches 300 lx".

2. Advanced: Estimate according to the characteristics of the selected products. Assume that according to the data (the manufacturer generally provides the light distribution map and reference data), the power density value of another 70W gold halide downlight B reaches 300Wx and only needs 8W/m2. At this time, the estimated total power of 60000m2 is 480kw, and the required lamps are 6000 sets. If the unit price is 1,600 yuan, the basic budget is 9.6 million.

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