Why should heat exchangers be placed as close to the ground level as possible in equipment layout?

I’ve never seen any requirement regarding where this is. There is the issue of the elevation of heat exchangers; for example, I once saw in another plant a heat exchanger in which the hot medium was generated by the natural pressure at the bottom of the tower, and due to the high position of this heat exchanger, the liquid level at the bottom of the tower could not drop below 90% of its maximum level. So I opened the vent at the inlet of the heat exchanger, and I observed significant negative pressure (suction) at the inlet, which caused vaporization and thus an air blockage. At this point, lowering the elevation of the heat exchanger, reducing the suction at the heat exchanger outlet (in the examples I’ve seen, there seems to be a pump behind the heat exchanger), or using a bottom pump can all solve the problem. There’s also a circulating water cooler; it’s too high, so the circulating water can’t reach it.

This is calculated based on the process system; it is not necessarily arranged on the ground. But if it can be installed both on the ground and on the platform, installing it on the ground will definitely be less costly.

HG20546 – it specifies the arrangement of the heat exchanger inside

The heat exchanger is placed on the ground, which facilitates maintenance!

Is that all? Is it to facilitate drawing out the tube bundle?

This could be one of the reasons; since the heat exchanger needs to be replaced, consideration must be given during piping installation to the space and pathways required for its maintenance and replacement

It facilitates operation and maintenance, as well as reducing structural investment. . . .

I think when looking at the specifications, one should consider them as a whole, rather than starting discussions by picking out just one sentence. This actually mainly discusses the requirements for installing heat exchangers in the framework. If it is possible to install them on the ground, then that should be the preferred option, and in either case, sufficient space must be left for replacement and maintenance, whether on the ground or on the pipe rack. As an example for such a joke: Suppose the \"Survival Manual\" states that one should eat as much as possible to survive, but when funds are limited and it’s not possible to eat enough, the following requirements should be met: 1. Replenish fluids first ； 2. Prioritize consuming high-calorie foods ； 3. Prioritize replenishing essential proteins for the human body. Question: Why should one eat as much as possible? Answer: Because I’m hungry~~

In the projects I’ve worked on, heat exchangers are rarely placed on the first floor. . . According to the standards, it is assumed that the heat exchanger will vibrate; in such a case, placing it on the first floor is obviously the best option. When placing it on other floors, attention must be paid to the loads involved.

Mainly, I’ve seen many heat exchangers installed on frames; so when I come across one like this, there must be a reasonable reason for it, right? Why try to use just one layer, yet still have so much placed on the framework? There must be some balance here, right? Of course, I don’t agree with the example you gave at the end