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Sliding passive cooler

IP.com Disclosure Number: IPCOM000205707D
Original Publication Date: 2011-Apr-05
Included in the Prior Art Database: 2011-Apr-05
Document File: 2 page(s) / 75K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Passive coolers are commonly used for the cooling of wind turbines, especially for direct drive turbines. According to helicopter safety regulations, the height of the passive cooler for off-shore wind power plants is limited to 1,5m above the helihoist platform. This limits the overall size of the cooler and therefore its capacity. The present design aims to provide a solution that maximizes the surface of the passive cooler while complying with safety regulations.

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Sliding passive cooler

Idea: Alex Yundong Wang, DK - Brande

Passive coolers are commonly used for the cooling of wind turbines, especially for direct drive turbines. According to helicopter safety regulations, the height of the passive cooler for off-shore wind power plants is limited to 1,5m above the helihoist platform. This limits the overall size of the cooler and therefore its capacity.

The present design aims to provide a solution that maximizes the surface of the passive cooler while complying with safety regulations.

In the following a novel solution is proposed which integrates a sliding passive cooler into the canopy of the wind power plant. As figure 1 shows, this cooler can be build larger than before, because it can be lifted up (figure 1a) and down (figure 1b) on demand. Whenever service on the wind turbine is required the passive cooler can be lowered below the helihoist platform by the turbine control system (cf. figure 1b) and the height restrictions can be met.

In case the passive cooler is too heavy for the lifting device the design shown in figure 2 could be applied. In this design, a smaller cooler that extends the regular one is being lifted up (figure 2a) and down (figure 2b) for height adaptation.

The lifting could be implemented by various mechanical mechanisms driven by different power sources, such as a hydraulic system or electrical motor.

Since service is usually req...