Essays about: "Per Wallgren"

Found 3 essays containing the words Per Wallgren.

1. 1. Influence of ANS Triboconditioning on friction and fatigue in rolling contact configurations

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Björn Hedmark; Per Wallgren; [2019]
   Keywords : Tribology; friction; fatigue; micropitting; surface engineering; twin-disc; triboconditioning; LTU;

   Abstract : The automotive industry is constantly being challenged by customers and authorities to enhance the efficiency of the internal combustion engine (ICE) in order to achieve improved fuel consumption and reduced emissions. There are several interfaces within the design of an ICE that causes frictional losses, one of them is the valvetrain. READ MORE

3. 2. Variation in piglet mortality between and within satellites in a sow pool

   University essay from SLU/Dept. of Animal Breeding and Genetics

   Author : Torun Wallgren; [2013]
   Keywords : Piglet mortality; management; loose housed sows; cross fostering;

   Abstract : The piglet mortality rates have become a major issue in today’s pig production. While other production traits such as number of born piglets or produced piglets per sow have been improved, the mortality rate has escalated. READ MORE

4. 3. Energy modeling for eco-cities with focus on energy utilization in built environment

   University essay from KTH/Energiteknik

   Author : Per Wallgren; Hampus Engdahl; [2013]
   Keywords : ;

   Abstract : This study focuses on residential buildings that are planned to be constructed in the Sino-Swedish project in Wuxi, China. The focus is on how different heat transfer coefficients for building materials affect the energy consumption for a building in terms of heating and cooling requirements. READ MORE