Joachim Grunwald
Product Manager Mobile Coolers
KTR Germany
Sweihan, United Arab Emirates

Putting the right twist
on building solar parks
Much uncertainty still surrounds the future of the world’s energy mix. The coal phase-out seems to be a done deal and nuclear power is 'clean' but entails risks. Many industrialized nations have set targets for their quota of renewable energies, yet the construction of onshore wind farms is often met with public protests. With renewables in general the question of storage arises. And while solar energy enjoys a high level of acceptance and is convincing from an economic point of view, it too needs to be stored. In sunny regions photovoltaic facilities are able to generate electricity at a cost of EUR 0.02 cents per kWh. And even where less sun shines, solar parks with production costs of less than EUR 0.02 per kWh are feasible and competitive. This has generated positive forecasts, especially as solar capacity worldwide rates at more than 500 GW (as at August 2018) with a trend towards larger solar parks.








Ground screw drivers: efficient engine cooling is mandatory
Krinner’s latest KRD 60 PV ground screwdriver, which achieves a maximum torque of 5,500 Nm when installed in a compact space, meets all these requirements. The primary drive for the traction and working hydraulics is, in this case, a Hatz 4H50TIC OPU 55 kW diesel engine with 2-litre displacement that forms a compact unit. With this engine configuration all the ancillary units, such as coolers and an electronic control system, are already included. And thanks to downsizing and modern common-rail technology as well as turbocharging, it is compact and lightweight yet very powerful. As a result Hatz makes a positive contribution to keeping machine size and overall weight as low as possible – with maximum performance. A KTR MMC series dual-circuit combined cooler enables high performance engine cooling. This module cools the charge air as well as the engine coolant and ensures that the machine delivers high productivity on a steady basis even when inserting ground screws at a very fast pace under high ambient temperatures.













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